Auto and sprawl [autosprawl] are heavily subsidized. But the subsidy is hidden in "externalities." That means the true cost of autosprawl such as the cost of oil wars and carbon dioxide emissions are not charged against oil, coal, natural gas, and automobile company profits.
At the same time, mostly poor people are being charged a fare to do something - use public transit - that benefits everyone.
We should pay the fare from general tax revenue.
There is a new website (as of 14 April 2007) for the people who want to promote this. As advocates send in their suggestions, the site is improved.