>>14453921>and charge the person who brought the original car back or their company's insurance a fee that's 10 times the cost of the repairSaying dumb shit like this is how I know you're LARPing and have never rented a car or taken a Business Law class. You cannot enforce terms like this because it's ostensibly an adhesion contract you're signing in the first place. It would be like charging a rental tenant 3000 to do a carpet cleaning that only cost you 400, it's illegal and you'll be sanctioned the moment it gets reported.
Not everyone wants a bigger or smaller car, they booked the car they booked for a reason. If someone wants an SUV and you have to give them a cross-over, there may not be enough room for their shit/luggage/dog+crate and they're going to rage. If you give a compact instead of a mid-size and some fat ass mother-in-law can't fit in the backseat, now the wife is going to be pissed that she isn't riding shotgun.
You don't get it because you don't want to get it. You sound like some fucking retard from a sleepy town of 30,000 people who doesn't understand larger city rental truck/car places frequently run out of inventory and lose customers to competitors. At a certain point, it's not about the profit, it's about losing (or pissing off) frequent/regular customers. Smashing a rental car without advanced notice/permission is a retard idea no matter how much you try to spin it.