Discover 10 futuristic motorcycles that were years — sometimes decades — ahead of their time but still failed in the marketplace. From the bizarre Ner-A-Car and rotary-powered Suzuki RE5 to the turbocharged Honda CX500 Turbo, Bimota Tesi 1D, and incredible oval-piston Honda NR750, these machines challenged conventional motorcycle engineering. We also explore the Yamaha GTS1000, disastrous Bimota V-Due, roofed BMW C1, automatic Honda DN-01, and pioneering electric Vectrix VX-1. Hub-center steering, turbocharging, oval pistons, automatic transmissions, electric power and even seatbelts — these forgotten motorcycles predicted technologies that would reappear decades later.

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