How can I get a mouse out of my headliner in the car?

I was driving & saw a movement in my rearview mirror. When I looked, I saw a little field mouse hanging from the seatbelt strap near where it disappeared into the headliner of the ceiling. I stopped the car & apparently scared it back up into the ceiling material. I tried to coax it out over the next few weeks with food, then blaring radio music (Rock, Bluegrass, etc. ) but it seems content to live there. I don't want to set traps or kill it so please don't bother with that approach. I'm looking for a humanitarian solution - any ideas?