In this episode of Supercar Megabuild, Engineers Ralph and Ranen are tasked with fulfilling their mentor's dream of producing one of the fastest road cars in the world. Afzal Kahn challenges them to engineer a car to beat his Bugatti Veyron in a straight quarter mile race. If that was not hard enough he gives the engineers a time limit of three weeks. In search of the perfect donor machine, Ralph and Ranen head to Japan and the world of car tuning. Much to Kahn's annoyance the boys return with a Nissan GT-R and a specialist Japanese ECU hack. But this alone will not touch the speed and power needed to beat the Bugatti Veyron so the car is taken...