Seeing this through adult eyes, I can only question how “jerky” equates with smashed cars, but through my 7-year old eyes this one resonated on a gut level, combining a very familiar candy with this junked cars concept. I vividly remember demolition-derby type events were constantly on TV through the early to mid 70’s, and the notion of destroying stuff for fun really intrigued me. So this one is a big winner for me, though not necessarily for conventional reasons.
Also, I love Wackys where the product contents themselves become the characters that sell the gag, like Shots Candy, Plastered Peanuts, Run-A-Way Vitamins, Knuckles Candy, etc. The little gummy cars on this one are just fantastic.