In my opinion, I think the driver of the small car did see him and wanted to block him. There was no room for that small car to pass the other car what with that truck coming the other way. The only other thing I can consider is that one small car just didn't know what they were doing and was trying to pass and didn't see the oncoming truck or the bike but how unlikely is that? No, I really think he/she was trying to block the biker and murdered that biker!