PHEVs do indeed typically have the output of their engines connected to the wheels through the drive train. You’ve described a range extender. Vehicles with a range extender do not have the gas engine connected to the drive train directly.

Home Assistant is open source and self-hosted and doesn’t require internet to operate. The z-wave devices connect directly to the device running Home Assistant. If you want Home Assistant to be private it absolutely can be.

I just use Brave on iOS. It works fine for YouTube.

With the Wii U technically there are 3 game cubes.