Well, as you can see the evidence below, it's definitely a Chevy Silverado.
EDIT: Not the case...see below.
Point of fact, is that F-2 is right, vehicle size does not matter.
Silverado: Note the wheel
![](http://a332.g.akamai.net/f/332/936/12h/www.edmunds.com//pictures/EI/2006/Chevrolet/2006.chevrolet.silverado%201500.20086985-E.jpg)
F-150: Dash not similar, nor the seat (and sorry, no side view was available to compare)
RH77
EDIT: Correction: I think it's a previous-gen F-150, but the wheel throws things off. GM dashes aren't as swoopy, and the 2-tone paint is signature F-150.