A large part of that is inflated health care costs. US citizens have to pay more than twice as much on average. Some services such as ER visits can cost 10x as much. US spends twice as much per capita than UK but get much less from it. Also keep in mind that the amount spent on roads is only a fraction of the total cost of cars in the USA.

Cut out the middle man (insurance companies and their profits) and you can get this number dramatically lower.