South Dakota drivers really piss me off. Merging is not rocket science and those yellow blinky-lights on the corners of your car are not there for show. I've driven in nearly all the CONUS states now, most of Canada and Central America, and even parts of South America and S.D. is the home of the WORST drivers. I can only suggest one solution paraphrased in the words of Bender Bending Rodriguez, the robot on "Futurama" : "Kill all Humans...in S.D.":devil: