It would almost have to cost more to drive to work than what they earned for working in order to get folks to change. I think a large percentage of the population would passively suffer being de facto slaves to the oil companies for at least a while.
Me? It'd have to run at least $10/gal for me to start shelling out anywhere near $200/mo. for fuel. As it stands, my commute costs me only around $1.20 in fuel for a round trip.
But if I didn't work 3rd, I'd ride it anyway.