You will be amazed at the number of nitro remote controlled vehicles there are; land, water and air types including planes, helicopters, boats, trucks and buggies. With so many pores and skin nitro RCs available you might never get fed up. If you want to get stuck in, it's totally start building your own kit from nothing or select a ready to function model car kits that is fully constructed and needs only feed.
Try the radio control airplanes and helicopters for your 8 years old and out. Make sure you choose a trainer helicopter or airplane to put a better possibility of flying. Not to worry if you crash it because parts are to be able to fix it and carry on having excitement.
When you are looking at the purchasing a ???? control car, look at what you were be using it for. Could it be a gift for minor? Perhaps a less expensive models from the toy store will what you need. Japan on sharing the joy and for the radio controlled cars with your own child?