the fact that people are not moving into the city has little to do with how the gas prices efect people's driving, they should take a poll. and you just disproved your own point, in the 70's and 80's gas was relitivly expensive.. 90's gas cheaper = the growth of people driving themselfs and not useing public transit that, which is what you based your point on in the your last post.
now gas is more expensive, than the nitties, there will be a shift back to public transit. and this shift would increase if t the system was better: more conveniate and more extensive/ faster.
people are avoiding crime and the high cost of houseing in the cities, this by far out ways the impact of a high oil/ gas prices