Kart Racing
Although often seen as the entry point for serious racers into the sport, kart racing, or karting, can be an economic way for amateurs to try racing and is also a fully fledged international sport in its own right.
World-famous F1-drivers like Michael Schumacher or Fernando Alonso and most of the typical starting grid of a modern Grand Prix took up the sport at around the age of eight, with some testing from age three.
Several former motorcycle champions have also taken up the sport, notably Wayne Rainey, who was paralysed in a racing accident and now races a hand-controlled kart. As one of the cheapest ways to go racing, karting is seeing its popularity grow worldwide.
Go-karts, or just "karts" - seem very distant from normal road cars, with diminutive frames and wheels, but a small engine combined with very light weight make for a quick machine.
The tracks are also on a much smaller scale, making kart racing more accessible to the average enthusiast.