What were the little 4x4 trucks that you turned the switch on the side which immediately started the wheels turning and on some (maybe all) the lights come on? They were pretty small and had foam sprocket looking tires, and the bodies popped off to put the batteries in They made a Bigfoot one and also a Jeep, Bronco and a few others. I think they even made some cars. McDonalds gave away miniature ones in their Happy Meals for a time. I think I was in maybe 1st grade. Maybe KG, so about 1982 ish.... Anyone remember these? I cannot remember what they were called. Prolly something cheesy like "Monster Climbers" or something