The Halo device which is being implemented on Formula One cars in 2018 must be strong enough to withstand the weight of a London double-decker bus, according to Mercedes.
This year's cars include one of the most significant regulation changes in recent F1 history, with the cockpit protection device being placed above the head of each driver. The new piece of kit has been a big challenge for teams to implement this year as it adds extra weight to the body of the car while giving minimal opportunities for aerodynamic gains.
In a video released by the world champions, technical chief James Allison has explained the task the grid's 10 teams have undertaken.