On 16/10/2009 Straits Times.
The article reported the shift was decided as something was
mentioned abt Pasir Ris one thing being far and congested.
Use Changi Airport means bigger ah tiong show since bigger buses
can't use CGA 
Actually they could just upgrade and expand Pasir Ris Int,
anyway SAF is alrdy squeezing public bus ops by using the
alighting berth for the Tekong shuttle
Read the whole article lah, find me 20 lots in Changi Airport
without distrupting the normal operations of public buses.
Definitely the basement is out. The coach park at T3 alone has
space for almost 60 buses, and it is serverely underused, you add
T2, its at least a few times more than the required number of
lots.