My wife was on holiday in Tasmania and got out of her taxi from the back seat using the drivers' side door. In doing so, the door struck a passing car causing a car accident and around $1000 damage to the passing car and little or no damage to the taxi. The taxi owner (not the driver at the time) has now forwarded the repair bill to us for payment. My question is: who is responsible for this repair? Isn't this what car insurance is for? I think he is just trying to save his no claim bonus. I cannot find any answer to this. I understand some states have "dooring" laws where you can be fined for doing this but can not find anything around liability to pay for damages. It seems to me, that if fare paying passengers were liable for this then there should be warning in the cab and as the driver could see in his external mirror, he should have warned my wife it was dangerous. Thanks.