The CO2-powered cannon was capable of way more power than cellophane-wrapped Twinkies can handle. Dial the regulator up past halfway, and they'd just shred on exiting the barrel, splattering anyone near the front of the car with sticky creamy filling and cake crumbs. That was both messy, and disappointing to folks down-range who'd been hoping to catch a snack. (And it immediately summoned a cleanup crew of seagulls, who then wanted more...)
So we learned to keep it modest, and developed a decent sense of pressure vs range. The car geometry allowed only limited variation of the barrel angle, so it wasn't a full-on GORILLA.BAS experience, but it was pretty close.
Culinary ballistics keeps you young. I highly encourage it.