Mini racers.

A team of ten 5 to 6-year old kids was invited over to Rolls-Royce headquarters to build their own electric race car to compete in the Formula Goblin race by the Greenpower Education Trust. Team March got the price for “Best Bodywork” though the tiny e-racer was obviously realised with the help of grown-up engineers who left their mark (RR).
autoevolution.com