Pickup trucks ... have full-size rear doors, while extended cabs either have just two doors or a second set of smaller doors.

We were going to limit the list to compact and midsize trucks, but it turns out that a short-bed single-cab full-size truck .

A crew cab has four full-size doors and is ... the length of a pickup truck's bed (also called a box) is the key differentiator between the three. While not universal, a short bed is typically ...