Grave Digger driver Dennis Anderson says there’s one major difference when he’s behind the wheel of a car and when he’s behind the wheel of a monster truck.“When you’re driving a car, you have to be very careful not to hit anything,” said Anderson. “When you’re driving a monster truck, you try to run over everything.”Anderson is one of the legendary drivers in the Monster Jam series, which is in Nashville at Bridgestone Arena this weekend. There was a Monster Jam show last night, and another one is set for today, Jan. 4, at 1 p.m.Anderson took a few minutes from his busy schedule to talk to the Standard on Wednesday from his home near Kitty Hawk, N.C. He said he competes in about 25 monster truck events a year and the thrill of catching big air and crushing cars never gets old.“I’m nervous every time I go out there so I guess you could say I’ve been nervous for 33 years,” said Anderson, 54.