Just curious, why does it have to be moved to the left of the steering wheel to use the traffic receiver? I take it you have a portable GPS Nav and most of them use an FM receiver to receive its traffic info, so all that is necessary is for you to plug in the traffic receiver to your cigarette adapter. My ac adapter IS my traffic receiver. It doesn't need a clear view of the sky because it works on FM signals like your radio.
On another note, I'd highly recommend finding a bean bag type of mount for your GPS which sits on your dashboard. I purchased the Garmin one for my Nuvi and it's the best $40 spent. You can move it from one car to another, no residue to clean off windshields or dashboards, and when you get out of your car you can easily hide it from view on the floor. Surprisingly it's never slid or fallen off. The only time it's done that was in an XC90, and only if you keep it too far down on the car's sloped dashboard.
