For my pinewood derby car I drew the side and top profile freehand, traced it onto the car body, then cut it out with a jigsaw. I further shaped and smoothed it with my oscillating spindle sander and stationary belt sander, then hand sanded to get a perfectly smooth and regular contour.
I made Kyle’s car a simple wedge design to allow him to do as much of the work as possible. I cut the shape on the table saw and rounded the corners on the router table. Kyle sanded it with my help, then I inserted weights and spray painted the car. Kyle decorated it with stickers and hammered in the wheels to finish the car.