My girlfiend and I were on our way to the Ribfest on Sunday. On highway #7 just inside the city limits a guy in the slow lane pulls in front of me and does a u-turn right in front of me. I didn't have time to blast him with the horn but was prepared to slow down (I was in the passing lane) to avoid t-boneing him. I didn't know what to do but my old instincts said I needed to talk to whoever was behind the wheel. I got ahead of him and drove at half the speed limit deciding what to do. Suddenly he pulled into a school parking lot and parked. I turned around again and was already forming in my mind what to say to him. I was going to say "what driving school did they teach you that trick in?" Instead I rolled up to face the driver and he was immediately very apologetic. Apparently he "didn't see me". I explained that you are not supposed to do u-turns on major streets and that he could have killed us in a calm manner and we rode away. This is the third time I have been "invisible" to a driver. The first time I was on a brand new bike and the bike (not to mention me) was damaged on both sides. Just thought I would remind people we are sometimes "invisible"- safe riding!