I think DC missed an amazing opportunity for a spin-off from this Firestorm back-up story in "Flash" #304 (December, 1981).
I bet being involuntarily costumed as an ice cream vendor was a profoundly life-changing experience for that policeman. At the least, it would have driven him stark-raving bonkers. I can just picture him quitting the force to wrestle with his conflicting need to dispense both justice and fudgesicles. He'd be DC's very own peanut buster parfait Punisher! Grimly, he'd patrol the streets of, er, wherever the hell Firestorm was living at the time, in a gloss-black ice cream truck (with all the windows tinted, but of course), death metal music blaring in a garbled, stuttering fashion from the damaged speakers. Besides the usual arsenal of high-tech weaponry, he'd lob scoops of mace-chocolate-chip at his enemies and use jagged waffle cones like ninja throwing stars. He'd burst into a crack den and machine-gun the place, giggling "How 'bout some sprinkles, bitches?!!" Maybe he'd enjoy occasional team-ups with a smaller, more refined vigilante by the name of Haagen-Dasz (a Danish* spy, perhaps?) or a pair of drug-addled underground radicals called Ben and Jerry, or maybe even a sultry, fishnet-hosed karate-chopper codenamed the Blue Bunny. Of course, he'd still wear the ice cream man uniform, only without the jacket and with the sleeves of the shirt ripped off to expose his massive, oiled/grimy biceps. And naturally he'd have a couple of bandoleros draped over his shoulders, and two ice-cream scoopers in leather holsters, like guns. Yeah... that would've been pretty sweet. *sighs wistfully*
*Although Haagen-Dasz is actually an American brand. (I hope I didn't blow your mind.)