Hmmmmm would be a good shake down wouldnt it..............in a purely scientific way that is' date=' to check the drag co effeicant(SP?) of the VR [/quote'] Everyone's car will be different, depending on tyre sizes, ride heights, body kits, radio antennas and wotnot. You can work out your drag co-efficient if you feel the need. As for a blast down the autobahns, I don't see the point. It'll add 30 minutes onto the journey and you'll probably struggle with traffic. THose 30 minutes could be better spent doing two laps, in my mind! Cheers, Andy