A lap on the famous Spa-Francorchamps grand prix circuit, filmed with Harry's lap timer running on an Iphone 4. My first time there, with a factory Porsche Boxster S, no modifications, street spec. tyres, manual transmission. An it was yellow. :) Notice the KTM "parking" in the middle of the track at the very beginning of the video. Finally i've overtook the mighty Porsche 935 Kremer, after a 3 laps chase.