Maybe I should rephrase my question a bit....Can I take the points that I would have normally accrued with the car rental agency and get credit for my car usage with an airline company, hotel, etc.? I know that there are many companies that have mileage sharing programs and thought that someone would know a way to at least get some miles for the car I rent every week.

I can't see how I would incur the wrath of my company for getting miles in another account for the car rental.