This is actually a response to your tag line, the Obama bumper stickers are so few and far between in the morning on the way to work because they’re mostly attached to the “cash-for-clunker” cars:)
A couple of weeks ago, I was at Lowes (maybe Home Depot) and I helped a stranger load his truck in the parking lot (book case or shelves I think - Heavy). When he closed his tailgate he had an Obama sticker on the bumper. I chuckled and said,
"Wow, somebody vandalized your truck! Either that or you have some pranksters for friends. Goo-Gone will get that sticker off of their."
There was a good pause before he said, "I put it on there."
To which I replied, "I'm sorry. I didn't know. No offense intended. I thought you were a hard working, middle class tax payer like me."
I grinned at my own quick whit all the way home.