Honestly I still don't fully accept that having a second engine running on completely different fuel is a good idea for a car. A hybrid airplane seems too ridic

Honestly I still don't fully accept that having a second engine running on completely different fuel is a good idea for a car. A hybrid airplane seems too ridiculous to even consider, because now both engines have to be lifted up into the sky! But of course this is based on my own amateur and dated knowledge. With all the work that has gone into hybrids lately, who knows.