A maker added a linkage and rubber bands to make a Mini 4WD car jump. The first version held its legs in place with a cable tie, which had to be cut with nippers to release the jump.

A second version introduced remote-controlled release and achieved more stable jumps, but increasing the number of rubber bands to 32 dislodged a press-fit axle. Jumping while driving remains a goal for the next version.

A Nico Nico Douga maker named Korori built a triangular machine for the anything-goes JCJC time-attack scene. The idea targets one of the course's hardest sections, the lane change, where roller contact can slow or destabilize a conventional rectangular chassis.

By making the body triangular, the design aims to reduce that contact near the crest. In the pursuit of speed, even the familiar shape—and effectively the usual four-wheel assumptions—of a Mini 4WD car are treated as optional.