When I mentioned an upcoming trip to Mark Orlowski, who runs the nonprofit Sustainable Endowments Institute, he asked, “Where are you getting your rental car?”

My answer: “I don’t know. I’m getting a rental car.”

“Don’t be an idiot,” he replied. You’ll want to hear what Orlowski says are his best strategies for renting a car.

Click the media player above to hear more from Mark Orlowski about the best ways to rent a car.