Question

Our competitors have modes to make their cars quieter. Our answer to that would be to make a car faster than the speed of sound.

How much horsepower would the Challenger Hellcat Redeye Widebody need to run the speed of sound arrive before the sound of its legendary engine arrives?

Pro Tips

Assume Stock Redeye Widebody curb weight
Assume no wind
Assume no driveline losses
Redeye travelling at the speed of sound (760 MPH --> 1116.4ft/sec)

What you need to know:
HP = Fsum x V/hp
F drag = 1/2 pv^2 CdA
F rolling resistance = Crr x Weight
F sum = F drag + F rolling resistance
Cd = .398
A = 26.72 Ft^2
Crr = .015
p= .002377 slugs/ft^3

Answer 1