Hmm, he's insisting it was a G40 because he could hear it whine. From behind the car. I've got toothed belts, but all you can hear when I'm ragging my car is the exhaust. It's only when you're stood next to the bonnet that you can hear the supercharger. The only cars you can hear whining from are Eaton charged ones, and they'd slay a Yaris on half throttle.