[YankeeMagic]

There is no way he can get 80mpg AND 400 Horsepower

[chainsaw]

There is no way he can get 80mpg AND 400 Horsepower

Maybe with a small steam turbine attached to the drive shaft and a steam generator attached to the exhaust manifold.

[Lockbox]

There is no way he can get 80mpg AND 400 Horsepower

Sure there is, go to the top of the mountain, head down hill, put car in neutral and coast........now up hill and 80 mph with a 400 hp engine, that's a different deal.

[mamelukesabre]

He’s using some kind of supplemental power source and not counting it into his MPG figures, but he is counting it into his horsepower figures.

Like a tank of compressed air, or compressed hydrogen, or a storage bank of batteries.