K1 Speed
 K1 Speed is a chain of indoor kart racing tracks nationwide across the United States. K1 Speed also markets its own line of automotive and karting race gear called K1 Race Gear.K1 Speed was co-founded in 2003 by David Danglard and Susan Graver. Race car driver Boris Said is also a small owner in the company. K1 Speed features European-built electric go karts capable of 40 mph (64 km/h) asphalt tracks and computerized scoring.