My experiences regarding courtesy cars have always been where the car was provided by the accident repair company. My 87-year-old sister has recently had an incident where a van has shunted her parked car and damaged front and rear. Everyone, including the police, has been helpful but the insurance company has arranged for a courtesy car company to contact her before she knows where her car is going. In addition, as her car is an S reg Rover 400, I think that there is every possibility that it may be written off. I recall reading letters in your columns regarding some type of scam with courtesy cars. Is there anything that my sister should be wary of or avoid?