A recent Facebook post

 Daughters car side swiped by overtaking car on A426 just before it crosses M1 between Countesthorpe and Broughton Astley
3 cars in convoy and none of them stopped. Daughter mounted grass verge to avoid head on crash and they didn’t even stop. Drivers side of a blue grey car will be damaged. Mirror casing found on road side. If your friend or your kid or partner has turned up in the early hours of Tuesday with damage to their car with white paint marks on it then they left a 17 year old girl at the side of the road in shock with the side of her car so bad the door would not open. If anyone has a name address or a registration number get a message back to me. Please share.

UPDATE
Have got the wing mirror and the code says it’s a Vauxhall Astra
Silver blue colour.