We always knew the Mercedes SLS AMG was not an everyday driving car, and in this video where Fifth Gear tries the Gullwing on the roads of the Isle of Man, we discover that it really only works its best at high speeds. David Coulthard lends his ‘toy’ to the team to try it out and with the roads closed not only do you have to negotiate the speed you can fly around at, but also you’re instinct to be looking out for other cars. Coulthard managed to get over 160 miles an hour and the challenge is on. Watch the video to see how it finished.