Tiny it may be, but it is still definitely badass.
When it comes to building RC cars, it's possible to have a fairly tame, run-of-the-mill beginner sort of a car. But some people get bored with this, and sometimes very quickly. So the more serious hobbyists go looking for more specialized parts, or build custom bits themselves. The Gravedigger replica you see here is a mix of the two, including a Stinger 609 (6.09 cu-in) supercharged V8 engine, which is quite an impressive thing by itself.
What's particularly great about the engine is that it gives the little truck a sound which isn't so far off from the full-scale version, albeit a bit quieter.