I live up north. In these parts remote starts are highly valued so that the car can be a bit warm when you get in in the morning. Considering that Rossy’s e-cat needs to be heated up to a few hundred degrees, then the steam engine needs heating up, instant start will not be part of the new energy catalyzer world.
However, we will live in a world where energy is all but free. So why not just leave the engine running. What if the e-cat was kept at full operating temperature and there was a small secondary steam or stirling engine that keeps the battery charged? What if the secondary engine also could keep the interior temperature constant? If heat was called for, keep the car warm all night or all week. If cooling is called for, run the air conditioner as needed. How easy is that? How convenient is that?
It sure is nice to think of a world where energy is free.