My first go at this - bit ambitious to call it a sketch, it's just a quick visual gag.
EXT. A COUNTRY ROAD.
A COUPLE, SUE AND DAVE, WALK ALONG, ARM IN ARM. A SUBARU IMPREZA RALLY CAR SUDDENLY APPEARS AND DRIVES PAST THEM, NOISILY AND AT GREAT SPEED.
A MOMENT LATER, ANOTHER, SIMILAR, CAR FLASHES PAST, THIS TIME SPLASHING THEM WITH MUDDY WATER FROM A PUDDLE.
A THIRD CAR FOLLOWS IMMEDIATELY AFTER, SLOWS, AND A MAN WEARING A FULL WORLD WAR TWO GERMAN SS UNIFORM WITH PEAKED CAP LEANS OUT OF THE PASSENGER WINDOW AND SHOUTS ABUSE AT THEM IN GERMAN.
DAVE: "Bloody Nazi rallies".
ENDS