Ive always enjoyed my models, and have done many projects with them over various times, and had them doing some crazy speeds aswell, and the odd accidently crash like hitting a brick wall with my brothers flat out, it was probably doing a decent bit over 40mph at the time, which explains on its own the impact such a little RC car recieved, the thing was quite a state, but after a good few hours of straightening stuff up, and a few new parts, it did actually run again.
The car above that guy built is truly amazing, i'd love to have something like that, its always something that ive had in my head a mini 4 stroke engine with proper fuel injection with overhead cams, it would be an amazing piece to own.