Retraction: It’s the “gas man” not an ice cream truck.

I received this information from one of the darling Preemptive Love Coalition folks:

“Oh, and by the way - the ice cream truck jingle? It's actually the gas man. Yep, trucks roam the streets everyday selling propane gas can refills. They used to bang the cans with a metal stick until the city got tired of that, and now they use the "ice cream truck" jingle.”

Oh.  I see.  Definitely an improvement. Big time. 

Thank you for the clarification Michelle!