Car2go handles it like this: When you get in the car, you rate its cleanliness. If it’s not drivable (flat tire, puke, etc.), they have a team of people on-cal

Car2go handles it like this: When you get in the car, you rate its cleanliness. If it’s not drivable (flat tire, puke, etc.), they have a team of people on-call to fix them. If it’s just not clean but still drivable, it alerts them and at some point the on-call folks will come out and clean it. They also have the ability to charge the previous driver a cleaning fee.