Gee force , experiment

With the recent chat about volts of the power pack, I decided an experiment was in order.
In Apparatus it took 6-8 batteries to accomplish this driving effect and that was with light wooden disc wheels .
I can't compare weights from game to game , but this one power supply succeds on the track with heavy wheels .
And it might weigh less & be smaller than 8 Apparatus batteries ,
Published to encourage discussion on the topic .