We recently saw the white car testing in a short video; now a new set of spy shots have given us an even better look. The car appears stock, until you notice the weird aluminum armature at the back. The wires and boxes indicate it's likely for data acquisition, and given the location, engine testing would be a good bet.
The black Veyron is wearing slightly widened bodywork and may also have a wider track. According to our spy shooters, those absolutely massive black wheels may be made from carbon fiber. Another interesting note is the panel cut out at the rear of the car behind the driver's side tire. There is clearly a radiator visible behind it. Perhaps, both cars are testing new powertrain options?
Bugatti has refused to give a precise timeframe for the launch of the Veyron successor, but it has promised that it won't be revealed until all current models are sold. It has also reportedly dropped plans to attempt the four-door Galibier supercar. Whatever Bugatti comes up with is going to have to be mind-blowing to outdo the modern supercar trio of the Porsche 918, McLaren P1 and Ferrari LaFerrari.