I was tooling down the highway a couple of days ago at about 75 when I heard something clattering behind me. I looked back to see my license plate and my side mount frame skidding and tumbling on the pavement through traffic. I took the next exit, swung around on the service road, and after about 15 minutes of searching the shoulder, found it in the tall grass. I am really surprised that I heard it hit the ground! I stuck it in my back pocket and rode on to the biker bar/ custom bike shop. I asked the parts guy if he had a shock-mounted side plate frame but all he had was a $250 axle-mounted one. I did want to hassle with that (or pay him to install it) and after I told him what kind of bike it was going on he quickly lost interest in helping me. So I wandered over to the service bay and mooched a couple of zip ties from the guy to get me home.