Skateboarding

With nothing more than four wheels, the skaters rolls on the ground: Start at the top of a hill and ride down. Thats what they want to do. The primary goal is just to stay on and avoid collisions; given the rough road conditions, it was no small challenge back then. Since improvements in design and materials, skateboarders have a higher calling.
Nowadays Skateboarding got faster, bigger and better. Skaters improved their skills. While it may seem that modern skateboarders are defying the laws of physics, the truth is that they’re just using them to their advantage.