I suppose 318 hp per tonne being soccer mom category was hyperbole. To save anyone else who is reading this late trying to work this out in their head, the hp/tonne of the 2007 Nissan GTR was less than 280 hp/tonne and had 0-97 km/h in 3.2 seconds-ish. The 991 911 Turbo is 330 hp/tonne. 318 hp per tonne is plausible for a soccer mom vehicle, but it would be a beast.