Mate Rimac tells us how he designed and now produces the world's fastest electric car.

He started out converting petrol racing cars to run on electricity and proving those vehicles could achieve top speeds. Mate Rimac then built a business to produce the car from scratch, with little money and no experience.

His company is now valued at more than 2 billion dollars after securing investment last year from Porsche. He's also managed to build a new car manufacturing industry in Croatia.

Presenter/producer: Theo Leggett

(Photo: Mate Rimac leaning against a blue electric car in a showroom. Credit: Getty Images)