Subsidized car travel is a convenience for ordinary citizens; subsidized truck travel is an advantage conferred on businesses that move a lot of stuff by truck,

Subsidized car travel is a convenience for ordinary citizens; subsidized truck travel is an advantage conferred on businesses that move a lot of stuff by truck, making their goods unfairly cheap compared to more local alternatives, or alternatives moved by more efficient means like rail and sea. Buying less stuff > spending tens of extra hours per week getting from place to place.