No, I wouldn't pay twice the MSRP for that car. There's no reason to - because a new one can be had for half the money.
However, let's paint a hypothetical. Let's say Bugatti stops making the Veyron, and there's still a very high demand for the cars. Supply and demand kicks in - and the fair market value of the car goes up. WAY up.
Would you expect to pay MSRP for a 1970 Plymouth Superbird? Current fair market value on those cars is over 20 times the original MSRP. Sure, it's been almost 30 years since Plymouth made the cars, so you have to consider inflation and a multitude of other factors - but the bottom line is that supply and demand has driven the car into "highly collectible" status...and the fair market value is through the roof.
On a smaller scale, the same thing has happened to the LBMF auction. The buyer was probably looking at that auction screen and thinking, "Well damn. Where else am I going to get one? Might as well pay a little more - or I might never get one".
In the world of selling - an item is worth whatever somebody is willing to pay for it, whether Joe Public disagrees with that price or not.