As ambitious projects go, Sir James Dyson’s plan to build a car is surely the most ambitious in the industry, comfortably eclipsing last week’s announcement of chemical billionaire Jim Ratcliffe’s plans to launch an off-roader inspired by the Land Rover Defender

The vacuum cleaner maker is not only planning to launch a car, but is doing so completely on its own, constructing a new factory in which to build the car, powering it with battery technology no car maker has come even close to cracking, and then following it up with a range of other models. 

Full story: Dyson to build electric car from 2020

Little is known about the car itself, let alone whether that initial £2billion investment includes the sales and marketing, and dealer/distribution network to take the cars to the masses Dyson needs to become a major player in the electric car game. 

Unlike vacuum cleaners, making cars requires a quite extraordinary amount of legislation to adhere to - not just on emissions, but more crucially on crash safety and getting a whole host of highly-complex systems to talk to one another, and reliably. This is hugely costly and crucial stuff to get right, before you even think about what it’s going to look like. Dyson’s early vacuum cleaners were not known for reliability.