2017 feels like another era these days, but if you cast your mind back that far, you might remember Tesla CEO Elon Musk’s vaporware Roadster 2.0. Full of nonsensical-sounding features that impressed people who know a little bit about rockets but nothing about cars, the $200,000 electric car promised to have a suction fan and “cold gas thrusters,” plus 620 miles (1,000 km) of range and a whole load of other stuff that’s never…








