Diesel doesn't have to be fossil. Unfortunately, I can't make them switch to algae. But I'd be OK with paying more for it, if it was available. Current electric cars make my regular long distance trips impossible, so that's really not an option. Yes, I considered an online call.

Non-fossil diesel is going to be very expensive... The alternative is battery swap stations. Nio seems to be successful with that.

I wonder if that could work on my 1200km-long trip. It'd have to be a truly pan-European company and network. So far we don't even have telecoms like that - I switch between 3 different national networks during the trip... But on the other hand, the Tesla Supercharger network spans the route, so why not I guess.