Dear Qitai,
I think you are quite similar to Paperchicken, likes to to give
"questions and answers" type of format. Neverthless, I have
completed two of your questions. The third one, already said but
nevermind, I will put a slightly different perspective to it. Here
are your questions"
3) Property Price. He state his stand on this before. But I like to
hear it again. Up or Down? Why? And how does he proposed that
government should intervene. Note that government should only
influence, not control.
4) COE, Car Taxes and Road congestion? Ideas and plans. Reasoning
for plans.
For question 3, whether we like it or not, the govt is the largest
land lord and property owner via its GLCs in Singapore. Such
monopoly powers are pretty rare in other countries but it is just a
simple fact. Even the pricing of your HDB, govt has a hand in it
via the rules and regulations set on the valuation structure,
process and price bands.
The ill effects of past govt policy mismanagement via the "Asset
Enhancement Scheme" has limited our options as a Nation. We are
basically stuck with the negative asset situation for the time to
come. You may argue about only those who speculate in the property
market are caught; that's not true at all. Some people have to buy
flats to live in and are subjected to the property bubble at that
time. And the fact that HDB prices are "pegged" with the high
prices at that time, on the pretext of "market subsidies", have
paid higher prices back then. But it is interesting to note that
nobody seems to be interested in how this "market subsidies" varies
from before and after the crash of 1997.
This "market subsidies" seems to have "shrunk" in size!

Anyway, property prices are sticky downwards, especially in
Singapore when a small group of players have monopoly power over
them. HDB controls the prices it sells its flats. Those GLCs in
development condos control the prices. But since 1997, prices are
still low, speak volumes of the sentiments or well being of the
market; times are really bad when even those with monopoly powers
could not prevent a heavy slide in prices.
Rental for business will definitely be affected, either direction.
The opportunity cost concept applied in land distributions have
affected the cost of industrial/commercial land, thus rental. It is
not a practice in Singapore for landlords to "bite the bullets" and
accept lower rental return; unlike Hong Kong, property prices are
more volatile in accordance to economic situations.
In my opinion, the govt should curb the powers of those big boys in
price setting. Singapore's property market is very small in
relative terms. And sometimes, when I read the ways they set their
CPF policy, I still wonder their rational behind such
formulations.
There are obviously overconsumption of housing in Singapore with
the public housing provided by HDB. It may sound strange to
Singaporeans that one could blame HDB for such over consumption but
the fact is that prices of HDB flats have risen alot in comparison
from the 70s and 80s. Too much savings and monies are being
absorbed into the housing sector and this is not healthy for an
economy. We could still put a roof over everybody without resulting
in too much savings being trapped in the property sector.
Thus, instead of asking me about what's my stand of the property
prices, up or down, you should ask me about the management of such
overconsumption. HDB definites have avenues to lower its pricing,
as I have pointed out in my earlier post that in effect, the govt
is not loosing money at all. It would mean a painful reversal of
the "Asset enhancement scheme" that would affect alot of people of
my generation.
The compromised position from such painful reversal is to freeze
the prices of HDB flats, make it sticky upwards at present prices
for X number of years.
For question number 4, this is a complex problem, not as simple as
put up pricing mechanism and we would be happy about it kind of
things. 
PAP govt is using conventional economic theories in its
implementation of BOTH the COE and ERP. COE is the "entry fee"
concpet, while "ERP" is differential pricing. These concepts are
used for maximizing profits for private companies, for example, of
running a carnival fair.
The aim of the govt is not about "profit maximization" but instead,
achieving social goals and objectives. this question involves alot
of complex views but I will just put up simple propositions.
1) I think I am one of the earliest critic of the present bidding
system; I reasoned that such bidding system is both inefficient and
ineffective, but only serves to maximize "monopoly profits"
received by the govt. A most efficient way to curb the "monopoly"
power of the govt is to have the closed bidding system, pay as you
bid but at the same time, creaming away the top 1% or 0.5% high
bidders.
I am not going to elaborate how this will
work as an efficient system of bidding as it involves quite a bit
of complex economic cum psychology views.
2) The system of ERP is NOT efficient at all, when demand of usage
overwhelmed supply. The only way of "effective" pricing is to open
up some routes that are totally FREE for cars to go into the city
area, while remaining highways are kept at the pricing state. The
primary aim of the pricing mechanism is NOT to maximize monopoly
profits of the road supplier, govt, but to efficiently and
effectively differentiate between "productive users" and "less
productive" users. This concept involves alot of economic theories,
I shall not elaborate furthermore.
3) If road tax is deemed as ineffective as comparedto COE bidding,
why keep it? 
4) There are other ways of solving the congestion problems in the
long term which I have advocated in scs before. But this will
affect alot of "big boys" in the commercial property market as well
as public transport providers.
There are two spectrums in the problem, mainly a
relatively inefficient public transport system, and the
redistribution of the overly concentrated economic/finance
activities in the CBD areas.
5) A total liberalization of the public transport system is needed
to solve these problems. They have implemented part of my earlier
suggestions, to provide special "express" bus services from middle
class clusters of residential areas to CBD. But they only provide
it during peak hours, which is not what I intended to have. A
better understanding of the benefits of a liberalized public
transport system is to make good study of Hong Kong's public
transport system. I shall not elaborate further.
6) To reduce the demands of road and thus, reducing the congestions
in major roads to CBD will require us to use both social
transformation as well as information technology.
This sound strange right?
Well, it is important for us to reduce the demand of
having to do everything physically at govt offices. And even so,
shift these fovt offices out of the CBD areas!
REdistribute them to sub centres like Tampines, Toa
Payoh, Ang Mo Kio, Woodlands etc. This will reduce the "peak
demand" at the "peak hours". Financial centres should be shifted
out of the CBD areas. IN Hong Kong, different district will have
their own district and high courts, unlike in Singapore, it
concentrates in the CBD. A decentralization program would be
needed, with the supplement of Information Technologies in
networking them together. I shall not elaborate further. Initially,
I thought the govt is going to take up my suggestions made here
when it starts to build alternative financial centres in Tampines.
But alas, I think there are great resistance to such changes due to
enormous vested interests of those property owners in CBD areas, I
guess. 
Anyway, I hope my answers are sufficient enough, though not in
details.
If your distrust of me is of personal bias,
then I say, I don't think I could change it by giving such answers.

Goh Meng Seng