I'm from MI and occasionally split. On the maiden voyage home after picking up the bike in Kentucky and riding it back (7.5 hours straight) I didn't hit traffic except when I was 30 minutes from home in 35 degree weather. I was ready to get home and wasn't about to sit in the cold during rush hour, so I split for a few miles, got a few honks, but no police (then again Detroit cops have a whole lot more to worry about than a lane splitter).