as a libertarian, I hate suburbs because the only reason they exist is massive subsidies. If suburbanites had to pay for the highways leading to their suburbs, nobody but the richest could afford them, instead I have to pay because you want a yard.
Not to get into a political thread, but last time I looked highways are actually one of the most difficult to attribute to subsidies (ie usage taxes pay for most/all/more than the usage of the highways so it is hard to say one way or another where subsidies go).
usage taxes (gas tax and what have you) emphatically do not even begin to cover the cost of maintenance alone, let alone the land cost, the initial construction cost (billions), etc.