Overtook several cars at once as we were travelling behind a car towing a caravan. Caravan doing speed limit. I was behind the caravan. This road is extremely windy. Overtook me and when a car came round the bend he had to pull in front of me to clear. Sat directly behind the caravan and proceeded to give me the fingers and shout abuse back at me. Then over took at another bend giving caravan driver abuse as well. Lots of anger for a man in such a little car.