London | While in Britain last month, Andrew Forrest bought an engineering firm. Now he wants those engineers to design and build him a train, and get it on the rails in the next two years.

But this is no ordinary train. Australia’s richest man wants a train that has never been built before; one that harnesses the energy from its own braking system to power a battery so it doesn’t need an external energy source. He calls it “the Infinity Train”.