Is the owner of the Rangie going to pay for a replacement? If he ran over the part, I assume he's responsible for the damage providing you managed to identify who he/she is...
Yea, I would have thought it be the other way round. Im pretty sure if I was following a car and something fell of and broke a headlamp or dented my car Id be looking to claim of their car! Lucky all round really, could have been much worse. Off out to check my exhaust....