They're not cheaper, that's an illusion and lie sold by the automobile and petroleum industries.
The interstates in the US alone have costed more than 25 trillion dollars. That's just the interstates, no other highways or roads.
But none of that even considers cost of using said roads. In the US, on average 15% of gross income is spent on automobile transportation.
That's a 15% tax right off the top, before your other taxes.
