Nissan unveiled a new GT-R prototype at England’s Goodwood Festival of Speed on Thursday. The design process for the 2020 GT-R was somewhat unique. Before it was even a physical concept, it was a supercar built for the racing video game Gran Turismo 6.This is Nissan’s entry in Vision Gran Turismo--an initiative by the gamemakers at Polyphony Digital to get concept sports cars from auto manufacturers to include in Gran Turismo 6.