On Tuesday, February 18, 2020 at 9:32:31 AM UTC+1, John B. wrote:

Of course there is a power loss but it is not the friction between the
generator roller and the tire wall.

You're dumber, Slow Johnny, than you accuse Tom of being. And you're very persistently dumb, too. It must be habit forming, or in your genes.

Wear this smart pointed cap and write one hundred times on the blackboard:
ANY TIME ONE WHEEL DRIVES ANOTHER BY FRICTION BETWEEN THEM, POWER IS LOST

Andre Jute
We can only hope you didn't breed any road kill