But then you pay tax, insurance and repairs on that which then adds to one's overall motoring costs... Plus, it means you get to drive the Scooby less. Therefore, you put out more cash but drive the car less. That doesn't make sense to me. The best situation is for the other half to have a decent motor that can be used on joint trips and general running around. Since the other half needs the car, tax insurance etc. is already laid out on it, so there is no extra outlay and savings are made on fuel costs