I don't know the numbers collected through taxes and the amount of that that is put back into transportation infrastructure. Neither of us do so there's no point arguing about that. I do think you're underestimating those costs however and I didn't even list them all. 20 years ago no one was talking about the health impacts of driving other than direct pollution costs. Now there's obesity and a myriad of other health issues, who knows what else we're not even thinking about adding to that cost.
And I never said some of those things wouldn't apply to transit, but as you point out, it would be less.