Just wondering how common it is? Only been riding a few months but on the receiving end twice in the last month and its a bit off putting. First time a driver heading in the other direction slammed on the brakes (in a derestricted) and window down then hurled abusive. More recently I've had a bag of rubbish thrown at me from a moving car. Just missed. Too surprised to catch the plate number.. Both on the same road, heading to a prison. Is this "normal" or have I been unlucky??