Concept Motorcycle : Honda EVO6

The EVO6 is a fusion of both sportsbike and cruiser in a dazzling concept machine. Powered by the large-displacement flat-six cylinder engine from the Gold Wing, the motor proudly sits on show in its minimalist chassis and bodywork. The aggressive design is completed by the slim fuel-tank and seat-unit and single-sided swingarm.

Yamaha XT500 : The LPG-powered motorcycle Greenfly

Dave Akhurst is a braver man than you or I. I feel confident in saying this because he rides around the countryside on the Greenfly - a heavily modified XT500 Yamaha that runs on Liquid Petroleum Gas (LPG) - and thus, if he happens to fall off, there’s a pressurised gas tank right there between his legs waiting to blow his bollocks off if it gets punctured.
The benefits of running vehicles on LPG are reasonably cheap running costs due to lower government taxes on LPG than unleaded petrol in most places, it has a high octane rating (108RON) and burns quite cleanly. On the flipside, you tend to get significantly less mileage per litre on a tank full of LPG than you would on petrol - and there’s the whole pressurised bollock-exploding gas cylinder thing to worry about as well.

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concept motorcycle : Honda Icare

This Icare Concept looks so cool! By Enzyme-Design. It is caught my eyes. With it's unconventional looks, breathtaking design. It with a Honda 6 cylinder flat engine and 1800 cm3. With double exhaust pipe. If its wheels can directly stand in the floor, I will love it.

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Motorcycle tank

WWII motorcycle tank hybrids. Very odd vehicles and I'm not really sure of the reasoning behind their construction, why the motorcycle front end was necessary isn't clear, the one site says it's for stability at high speeds and you actually could remove it in really rough terrain, but they do look interesting.

Specs say they could get up to 45-50mph with the 4 cylinder, 1478cc gasoline engine sourced from Opel, while the vehicle itself was made by NSU. It was designed to go into mountainous terrain and tow a trailer or small gun.

The web sites say there were about 8400 Kettenkrads produced during the war and over 500 afterwards. Some collectors keep them going and I think they look like a real hoot. I love stuff like this and if you dig around enough, you never know what you might find. Neat.