290 km/h

Winding it OUT!

The speedos are off a few percent. I'm not sure how much exactly, but even if the speedo was off by 10kmh/5mph, they had that 348 pushed to the limit! I wonder what time of night that was?

 

shame they didn't point the camera at the sat nav, that would of given the speed more accurately.

 

180mph or GPS 173mph, why does this matter, it's totally irrelevant, Especialy if you have ever driven at these speeds.
There still doing what joe average 348 owners don't and daren't do in there own cars. But video such as this gives them a good feeling that there cars are capable of such speeds, if they grew a pair. Providing it was safe to do so of course.