penile compensation
New 4dr 4WD trucks with every option known to exist attached. This helps compensate for a small dick. These vehicles seldom leave pavement as 99% of the people who own them don't want to get mud on their Izod & Dockers, or could very well get stuck due to lack of knowledge in off-roading. Hummers also fit in this category.
He's driving that truck as a form of penile compensation