I simply gave my 2c on your question.
> Would you be willing to keep your car if it meant having to pay for all its externalities and extra infrastructure costs?
Yes. I would. And honestly there really isn't much in it. In the US, basically everyone drives. In the UK, pretty much everyone who pays taxes drives.
At least in my situation, I think that if the costs were moved from general taxation to directly falling on car owners, I'd end up net positive!