They went with electric. Yes the man at the store hooked me up with a middle of the road truck. He said if they stick with it that I could bring them back and upgrade the batteries and something else don't remember. And they would be a 75 mph truck for around 125.00 more. I talked to him about the parts and what is common to have to fix. I got to looking at the Nitro trucks myself, I love tinkering with engines and stuff. Them things will scream!! Daddy may end up with one also.