Your question is very
funny.... shouldn't it be the other way round ?
If COE is at $70k....
then, It will be cheaper
to take a taxi than to buy a car....

Even a ordinary Korean or Japan made vehicle will probably cost
you $100k.... which I believed that you won't be able to
afford.
If you don't want to take a taxi... nobody can force you....
Just Walk to Work. 

Not saying COE for taxi is $70k, Cat B and Open Cat all above
$70k mah.
Aiyo, thats what I mean lor, COE so expensive, it makes taking
taxi a cheap alternative rather than buying car..