How do you know ahead of time that the route you are taking in such a low rider does not have any speed bumps?
Second sentence of the article: Now Bugatti has done that at the vast Ehra-Lessien test track in Germany.
They did repave part of the test track and the junction of old/new pavement would be hardly a ripple at normal autobahn speeds, but over 200 mph it creates quite a jolt, enough to bump the tires into the air and temporarily lost traction and adhesion.