Max-D driver Tom Meents walks past his truck before giving a demonstration for the media in Reliant Stadium Friday, Jan. 3, 2014, in Houston. The Monster Jam event Saturday features 24 monster trucks including Grave Digger, Scooby-Doo, Toro Loco, and Mohawk Warrior. The trucks will compete in a race and freestyle event. Photo: Johnny Hanson, Houston Chronicle / © 2014  Houston Chronicle