The INNEngine and Achates engines have come out to supplement the battery powered vehicle. Are they revolutionary is it too late?

Sources & Credits:
INNEngine
https://innengine.com/
https://www.youtube.com/@innengine-en...

Jumo Series
   • Video time lapse preview of engine  J...  
   • Start Junkersmotor JUMO 205C Flugzeug...  

Napier Deltic
https://oldmachinepress.com/2019/09/0...
   • That Deltic Drone ! The Greatest Soun...  

Achates Power
https://achatespower.com/
   / @achatespowerinc