personally id just abandon the car sharing scheme
unless you work next to him it doesnt matter you didnt get on. just tell your other workmates what a pillock he is
as for not saving money, it wouldnt be worth it for me to go to work with that pillock. Id rather pay extra and drive on me own.
My thoughts exactly. I couldn't care less about saving money if it meant I had to spend half my time with that tool.