Most large trucks (18 wheelers) get about 5 mi. / gal.
If their fuel costs go up, so do the prices for the goods they haul. If you have it, a truck brought it.
Inflation.
Amen
But as far as weight transported for a given distance goes, they are far more efficient than any 40mpg car. But Obama doesn't mind adding a few hundred bucks to the cost of delivering a truckload of food to the people. The taxpayer pays for his wagyu beef to be flown in.