Jeff Bursey drives “The Boston Big Shot” up and over three cars in the parking lot of the Androscoggin Bank Colisee in Lewiston on Wednesday. Bursey of Boston is one of five drivers who will compete in this weekend’s Motor Spectacular, an event featuring monster trucks and the Vertical Outlaws, a motorcycle stunt team based in Southern Maine. “The Boston Big Shot” is powered by an alcohol-burning 1,200 horsepower motor and rides on tires that are 66 inches tall. Showtimes are 8 p.m. Saturday and 2 p.m.on Sunday.