As a favor for a friend, went to see a Boy Scout's Pine Wood Derby race. Things have changed.... there is an Outlaw Class that allows bending of the rules. In this case, "powered fans" could be used on the race cars! Interesting.... even more interesting is the speed they attain. The one pictured below ran over 400 mph when measuring the scale of the car to the track! Another one went over 600 mph (to scale) but was retired early when a part broke.
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