Behold the $4.5-million, 740-horsepower 2017 Lamborghini Veneno Roadster and the $3.5-million 2017 Bugatti Chiron. If you're a speed demon and you…
After selling his Ferrari Enzo for close to $4 million, Floyd Mayweather dropped almost $5 million on his new supercar, a fresh Koenigsegg…