Des's car is quick no question of that, but to achieve 290 km/h (180 mph) is just not feasable as the runway isn't sufficiently long enough to achieve that kind of speed.
On the second trip to the airfield, a race prepped bike was shooting up and down that runway at astronomical speeds, again at claimed speeds of over 290 km/h but the bike appeared to be going faster than any of the cars I had seen over the weekend.