I've just had my third extremely creepy encounter this summer as a cyclist verses a seemingly crazy motorist. Three times in the last couple months I've had a car pull up behind me on traffic free two-lane streets and just lay their horn on me. One time I was outright terrified because the car actually followed me for over a block down Candeleria while continuously honking. Considering it was 6:45 in the morning there wasn't any other traffic, or even other pedestrians out, to give me a hand should this psycho decide to just run me over.
This weekend I was riding down Central on a scooter with a friend, and a car started tailgating us and honking like crazy. Again, two-lane street with no other traffic. In all of the situations there has been no reason why the car couldn't easily use the free lane to pass. The pure aggression of the situation is what makes it so scary.
I have no idea what to do the next time this happens. I would like to take down their license plate and report it to the police, but I have no idea who to call or what exactly to report. I don't even know if they're doing anything illegal.