I also built a car for Pinewood Derby in the Cub Scouts. My Dad was Scoutmaster, and had constructed a ramp, track sections, with electronic finish line sensors (this was back in early 1960s). No argument on who won races.

My frends and I built cars and raced on that track for a couple of years. This model of a fire truck is very inventive. However, I would suspect the extra weight may have disqualified it as an entry. But it is cool. Thanks for the post.

It weighed in at 4.6 ounces, the limit is 5. I bored out the back end.

It came in Second place!