Mudflaps- to most North Americans motorists, mounted to the rear of the wheels, inside the fender. Automobiles no longer have mudguards since the "wheel wells" are now part of the body.
Mudguards-to American bicyclists and motorcyclists- they go over the wheels.

"Dusty" is just too obvious.

In the southwest, Francis and Francisco become "Pancho," the Mexican nickname (as Villa).