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. My regular long distance trips are impossible with current electric cars, so that's really not an option. Yes, I considered an online call.
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.