"I bought this kit because it looked fun. I ended up letting my 11 year old nephew build it while he was visiting. It took him an hour or less to build. Not too difficult. The car is well designed. The center of gravity seems to be located a bit too far back, but we did not experience the “wheelie” effect that one reviewer talked about, so that is good. It runs great. Is a little hard to drive in straight lines. Best results in the house and on the sidewalk. It does not run very well off road. That is my biggest disappointment. It also has a very short remote range."