Last Resort

You and your friends are on a road trip, driving late into the night along on a dimly lit gravel road... You hear a loud noise, and your car starts acting funny. You pull over to inspect. Four flat tires... Only one spare. Thankfully, just up ahead, you see an old motel with the lights on. You enter, hoping to find some shelter for the night. But there's no one there to check you in, and the door has locked behind you! The four flat tires should've been a clue -- you've been caught in a trap! Can you make it out before it's too late?