President Obama's official limo -- a Cadillac nicknamed "the Beast" for its nearly foot-thick doors and underpinnings that are more Hummer-like than Caddy -- is trimmed with gold-rimmed presidential seals on the doors that you'd think would be a 24-carat permanent accessory.

They're not.

In fact they are magnetic stick-ons like the cheesy signs real-estate agents slap on the sides of their cars to maintain its tax-deductibility. And according to this report by the Philadelphia Daily News, they are about as permanent.

The President lost one on I-76 in Philly last week -- it blew off on the freeway on his way from the airport to a fundraiser there.

Secret Service spokesman Ed Donovan told CNN.com that agents and Philly police went back to look for it that night, but couldn't find it. "It happens periodically," he told CNN. "They're only magnetic. They're not put on any special way."

So is it now gracing the side of a rusty Taurus somewhere in Philly? Alas, no. The Daily News says an officer who stopped for a disabled car the next day spotted it by the side of the road and turned it in to the Secret Service.