Declaired as the the world’s first pedal-driven four wheel drive off-road vehicle...
Perhaps the next wave in karting fun is the Trailcart. Declaired as the the world’s first pedal-driven four wheel drive off-road vehicle, creator Frank Fraune of Germany has teamed up with AS Group and the two are currently testing prototypes.
The Trailcart uses high-end mountain bike components such as Shimano's Nexus 8-speed drivetrain as well as a double-action mechanical hydraulic braking system. One of the goals is to keep weight below 50 kg (100 lbs) which is typically the limit for car mounted bicycle racks.
Frank, don't forget your helmet!