Your avatar of Calvin bears a remarkable resemblance with the opening image of Rep. Bradford.

it does sort of...

Have to include it because there's a direct quote from Raw Story in it:

http://www.rawstory.com/rs/2012/02/01/colorado-republican-faces-questions-after-claiming-immunity-during-a-dui-stop/

I think the US Congress has a similar loophole. At least they did- When I was in high school I remember some congressman (or senator- I didn't read the newspapers much in those days) got pulled over drunk. And it wasn't the first time for this guy, but as usual, he gave the 'en route to legislative session' get-out-of-DWI-free card, and the Maryland state police let him go as usual. Then he wen't and talked big about it to the press. Something to the effect of "those cops had best be letting me off"- Sort of a retroactive "don't you know who I am". The cops were so intimidated they slapped a retroactive summons on him. I didn't like the cops at all in those days, but I had to give them a thumbs up on that one.