You never travel 2-3hr on public transport in Spore before to go school or work? From last time experience before the transport links are improved, just need to study or work in the west, stay in the north or north east, needed more than 2 hours taking public transport changing bus to mrt to bus. So is jam in the cool comfort of car better or in jam packed public transport plus walking under hot sun better?
My sense is most people's average commuting time is about 1-2 hr. 2-3 hr in a jam is draining if you are the driver. If it is really so good to be jammed at the bridge, a lot of Singaporeans would have migrated over to Johor. My guess is because of the jam, more people are migrating back to Singapore.