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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