The only problem with the Veyron... well, it's not really a problem with the Veyron per se, it's a problem with the laws of physics. Anyway, the problem is: it can go at 254mph... for somewhere between five and twelve minutes. There's only so much energy in an octane molecule, internal combustion engines are only so efficient, and the inertial overhead of fighting against air resistance at jet-airplane speeds is massive.

It's a jawdropping piece of engineering, but even for the people who can actually afford one, its top speed is purely a party trick. Now, the Nissan Skyline... :)