I don't know anything about the Sinclair C5. I had never even heard of the machine until today, but here is what I have figured out: three wheels, 12 volt electric power, about 15 miles per hour. Looks a bit odd, and not very comfortable. But, judging from the specifications, I don't think it was intended for long-distance travel anyway. I know what you're thinking: why not mount a jet engine on it, right? Yeah, thought so.
That is exactly what one man decided to do: replace the electric drive system with a jet turbine engine, instantly raising the top speed of the machine from 15 miles per hour to 100. Street legal? I hope not! But, it just goes to show you what an enterprising person can do with enough time on his hands and a big enough helmet. What's next? How about a jet engine tricycle... or a Radio Flyer? Too cool! Remember, jet engines can run on many different fuels; but somehow I don't think that makes this vehicle green. Talk amongst yourselves. I'll give you a topic: green jet powered tricycles are neither green nor jets. Discuss.
[Source: Jet Power via Visor Down]