Jan. 7-9 Monster Jam Mid-America Center, Council Bluffs Friday 7:30 p.m., Saturday 2 and 7:30 p.m., Sunday 2 p.m.; $30-45, $5 and up for kids 800.745.3000, ticketmaster.com If watching super-sized trucks do Transformer-like demolition derby feats is a turn on, then Monster Jam may be your hard-bodied wet dream come true. We’re talking powerful, custom-built models 12-feet high and 12-feet wide and weighing five or six tons each. These quarter-of-a-million dollar monsters rampage over everything in their path, soaring over, knifing through, or plain crushing an assemblage of cars, vans, buses, motor homes, and airplanes. It all makes for a super-charged, methanol-injected experience for the what-have-you-got-under-your-hood? grease monkey crowd. In addition to the freelance mayhem, there’s side-by-side racing. It’s like car action scenes from the movies come to life. A pit party preceding the Saturday matinee will let fans walk the track, meet the drivers and photograph the trucks.