I've only ever had something similar once, in the North east of England. We had followed the National cycle route diligently the previous evening and after it had crossed the road 5 times in less than a mile and had stupid giveway lines at everyone's driveways. we had taken the decision the following morning, not to bother with it and cycle back up the road instead. We were on laden tourers with tent...
Low and behold we got the same abuse from a male car driver who hassled us constantly for a couple of hundred meters (on a totally desserted road) and then zoomed off into the distance. We sighed a short sigh of relief until we came around the next corner where he had pulled up across the cycle lane blocking it at 90 degrees trying to make a point. We could see a lady in the passenger seat that was trying her hardest to calm him down - he was out of his car and in our faces before we really had time to take anything in. So we offered to let him try cycling our bikes down the cycle route - fully laden touring bikes - something he clearly had no experience with. He never got any further than trying to turn my husband's bike around, nearly dropping it into his legs before he had even mounted it. He never said a word after that, got into his car and drove off - no engine revving this time. It was a huge gamble - but we reckonned that he wouldn't get far on the bike anyhow and there was not much he could do damage wise and clearly could not handle the bike... we laugh now, but at the time it was quite intimidating, but I think we got the point over.
It can be very intimidating, but staying calm is really the only option. loose your rag and they have won.