Trouble is, anyone with a car from '89 on would need to maintain a speed of around 6 mph to prevent the spoiler retracting, and the inevitable sausage loss that would follow..
I would advise the use of chicken wings and ribs instead then, as they dont have the "roll" properties of a sausage or "flip away" properties of a burger.
Take a look at this guys outfit. This my friends is Classic 911 Uniform ! Timberland loafers, levi's- they look like 501's, and a simple but elegant button down collar shirt. Top marks.