+1 and usually the advice I follow, last week tho after several unnecessary close calls, some big fat a-hole decides to lay on the horn cause the courteous driver in front of him was giving me plenty of room while going up a small hill near my home. I wave the kind driver around and swung out into the lane, looked back to see a huge pig of a driver waving and freaking out, honking, cursing etc. As I heard them speed up to pass me I took out my half filled water bottle and launched it into the side of their car. They never slowed. I usually ignore the a-hole out there but I snapped that day. I do not recommend doing what I did. You never know in this crazy world who will pull out a gun or just swerve into you.

It happens, stay safe out there.