You’re converting the horsepower of cars into Nrp, which, as Nrp is a unit of torque, does not make sense. Horsepower, in reality, is essentially in units of Lb-ft/second, so in theory you could convert HP in Nrp/s although 1HP isn’t 1 Lb-ft/second, so your calculation for the Nrp of well known cars is off, you should…