Just picked up a new Quicksilver MYP and loving it. I notice when driving over bumpy roads and looking through the rear view mirror, other vehicles seem to "vibrate/shake" slightly. The rear window has all of the defroster gridlines, so it's very noticeable, but there's no shaking on smooth roads. I find it hard to believe the glass or hatch is loose, and the rear view mirror itself seems tight. Anyone else notice cars behind them vibrating over bumpy roads?