Watch an epic battle between the Bugatti Veyron 16.4 Grand Sport, Nissan GT-R R35, Audi TT-RS, and Porsche 991 Turbo S! Which of these high-performance machines will dominate in speed and power?

The hypercar known as the Bugatti Tourbillon may still be in development, but we know exactly what kind of punch it packs: a V-16 engine is mounted amidships, working in concert with three ...