Speaking of brochures: In 1967 I was shopping for a new car and talking with a Chevrolet salesman about a Chevelle SS396. I asked him where the claimed 360 HP was measured, at the rear wheels or at the flywheel?
He looked me in the eye and said, "Mr. Willis, the claimed horsepower is measured at the brochure."
So true. I appreciated his honesty, although I did not buy the Chevelle. Ultimately I bought a small block Camaro instead: it just handled so much better in turns.