> How do you mean combustion being CO2 neutral?

I read elsewhere that they can run the engine on a wide range of fuels, so I think they mean it's CO2-neutral if you run on biofuels.

I'm not a big fan of biofuels, but I think they can have some role in a transition period if you have a mostly battery-electric drivetrain with an engine as range extender... and this car is a pretty good model for that. Remember that the production of batteries is limited, so it might be better to build 2 million cars that use a range extender once in a while, rather than 1 million cars that runs only on batteries (I say this as someone owning a pure battery electric vehicle btw).

But I think the key for this kind of transition vehicle is an ultra-simple and compact generator. Maybe something that is modular and can be swapped with a battery pack later. I think free-piston engines is what we need (I'm guessing they need something like Freevalve though, so maybe Koenigsegg's research contributes there)