Was coming back home and motorway was backed up I was always told off my lorry driving dad is appreciated as they work on time logs ,as we where at a stand still I left a gap for a lorry to join the lane , next thing a know a crazy old man started banging on my window saying a made his journey much more longer and I should not have let him in, I was very polite and told him to go back to his car as everyone needs to get along , he then got back in his car and rammed mine from behind and has caused about £400 worth of damage to my car,all caught on dash cam front and rear refused to give me his details so letting insurance deal with it but the question is was I wrong to let the lorry driver in .?