[logicalmonster]

There's some interesting developments in rotary engines and other approaches to redesigning internal combustion engines to make them much smaller, more powerful, and even more efficient.

I can't tell the future obviously, but I think there's a lot of life in the internal combustion engine alongside use cases where electric technology makes a lot of sense.

[defrost]

Orbital designs show real promise in various applications - powering drones for one.

I still stand by my prediction that the vast bulk of small combustion engines we see about us today since post WWII - the lawn mowers, leaf blowers, scooters in their million, etc will be replaced by electric motors and rechargable batteris.

It's already happening and makes better sense in any application where batteries can be readily replaced.