Originally created as all-terrain military recoinassance vehicle and later adopted by civilians for racing, it could roll on the ground at great speed, crushing enemy soldiers in its path. The legs were engaged whenever the craft needed to climb steep cliffs, especially useful on the sinkhole-filled planet of Utapau.
At least three wheel bikes were stored in the tenth level of Utapau by the separatist forces. GeneralGrievous modified his bike by replacing the passenger seat with a nd-53 double laser cannon. He used his bike while being pursued by Jedi MasterObi-Wan Kenobi, who had been sent on a specific mission—to either capture or kill the General—on a varactyl named Boga.
After a long chase through several tunnels, Obi-Wan got close and jumped onto Grievous's wheel bike. This made Grievous lose control and the wheel bike went into a spin. Both Kenobi and the General were thrown off, and the wheel bike rampaged over the edge of a platform, falling to its destruction.