I agree with the several points you pointed out. In particular the weight problem. Since batteries don't decrease in weight while maintaining power output like

I agree with the several points you pointed out. In particular the weight problem. Since batteries don't decrease in weight while maintaining power output like Gasoline. Still if you operate a battery I don't know between 40% to 80% and you're able to keep the power output of the battery generally consistent then I guess a fixed weight isn't such a problem. Of course I am not an EE and I'm only speaking with my limited experience of operating toys. The pacemaker thing is interesting. My counter point would be to detect when it would turn on. But yeah, with the time to transfer energy and the extra complexity in the road, yes this has been nullified haha. Thanks for the details.