Enormous vehicles used to be used by people who needed them. Electricians. Plumbers. Carpenters. Delivery truck drivers.
Suddenly rich people wanted to use huge vehicles to publicize their inner insecurities & paranoid beliefs.
Fears about becoming poor. Fears about thieves & car accidents. Fears about not being masculine.
Fears about the end of the world & fake fears about things like a zombie apocalypses (ie hidden fears about race wars). Fantasies about mountain trails.