Audi In the past decade, the well-worn automotive cliché Race on Sunday, sell on Monday has taken a surprising twist. Now, automakers have realized that they can race on Sunday and sell race cars on Monday. If you've got the money, Porsche, Lamborghini, Audi, Acura, Ferrari, Mercedes, McLaren, Nissan, Bentley, and more have a race car for you—for around $500,000. The rise in popularity of supercars worldwide has been paralleled by explosive growth in international GT3 class sportscar racing.