Also, what does a guy in jockey shorts on a horse got to do with a role-reversal car wash?
I have a thought. Weren't the men trying to touch and "turn on" the car? Using an excuse, something like, "Oh, you've got something on your blouse. Let me brush it off." Then someone else comes along, "Oh, you're also dirty over here ... and here ... and here ... finally they throw on water and they all start "cleaning" (while secretly touching and caressing).
Then in a frenzy they remove their shirts and rub their bare skin on the car, not able to get enough of it. Guys remove their clothes, standing along the curb, waiting their turn?
Maybe? I don't know.
The commercial, actually, was pretty sick. Getting sexually aroused, in public, over a car.
Because of the old yarn that a good car impresses the girls. And they like it so much they'll try to get the guy just to get a ride. Surely you're aware of this!
And certainly a GUY would be impressed by a good car....