He’s built one out of aluminum. In his shed. Easily qualifying for ‘mad rare old-timer’ is the Tyrrell P34 six-wheeler ...

which is set to go under the hammer at Silverstone, is a 1:3 scale replica, weighs 32kg (71lb) and took three years and more than 1,000 hours to build. The winning bidder could race the car "in ...

Electrical engineer Allen Pan, who posts regularly on the Sufficiently Advanced YouTube account, has created a real-life replica of Thor’s hammer Mjolnir. But that’s not the craziest part.