Semi-truck and full truck. There are terms that get tossed around often, and it's easy to think of them as opposites or, to some, even interchangeable. Well, not quite. One is an actual technical ...

The average miles per gallon of a semi-truck is bad enough when barreling down the highway — somewhere in the range of 6-8 MPG — but things don't look much better when the 18-wheeler's at a standstill ...