More to explore:
McLean V8 Monowheel
Suzuki Pixy. Personal mobility unit
Ghe-O Motors Rescue Vehicle
mclaren mp4-12c & maclaren f1
Gibbs Quadski, A Quad runner and a jet ski in one.
DTV Shredder. A tracked skateboard powered by a small go-kart engine.
Rungu Juggernaut fat-tire trike
Bell X-22, vertical taoke-of and landing research aircraft with tilting ducted propellers.