Which has then also happened that the costs have been reclaimed by the insurer from the first party. Making insurance very much pointless.
But the important thing is that the person he ploughed into gets paid out for his car and the whippy compo like normal.
The bloke has asked for a bit of advice not an ethics lesson.
Yes, you can sell a car in your mother's name but it may make potential buyers a bit nervy, so be prepared for that.