Porsche aims to sell 20,000 units per year worldwide of its first attempt at an all-electric car, the Mission E.

The challenger to Tesla’s Model S is not due until 2019, although the concept was unveiled at the 2015 Frankfurt Auto Show.

With a projected top speed of more than 250km/h and 600 horsepower, the Mission E will go from 0 to 100km/h in 3.5 seconds.