This Buggy perfectly demonstrates the connection between power (pullback motor), space effectivity (real space for a driver) and design. I think, that the design is very realistic and sensible, because my inspiration comes from real racing buggys which are used at kids and junior races. I used Lego 4.2 x 2.2 flat tires, instead of any more terrain ones, because they are more stable and they are pretty small, (thats good, because of fast acceleration). This cute small car is very easy to build if you don´t believe you can try it with this tutorial video:
The Inspiration:
If you want to see this buggy jumping at a skatepark watch this video: