A presidential candidate's tour bus has license plates with a familiar look.

Missoula County Commissioner Michele Landquist said an acquaintance sent her an interesting picture. Landquist said a friend of her?s driving in Washington, D.C. was first just excited to be driving behind Rick Santorum's bus, and then she noticed the Missoula County plates tacked on the back.

She sent the picture to Landquist who was also surprised with what she saw. But after sharing the photo, she's says it's raised some questions.

"I didn't think too much about it at first, but then when I showed it to others they're the ones that were connecting the dots,? said Landquist. ?Saying things like, ?Wow, I bet the constituents of his state would like to know that he's not paying his fair share of taxes,?? she said.

We don't know who owns the bus, but did try to contact Santorum's campaign office. We did not hear back from them.