I watch some of Dave's videos and occasionally the live show. Some good advice. I bought a new car last summer, got a good discount on the 2019 closeout's. After agreeing on the drive away price the salesman handed the wife and I a financing application. I pulled out the checkbook and said we didn't need to finance. Should have seen the look on his face, then he had to make a quick trip to see the sales manager. I got the feeling had they known we were paying cash we wouldn't have gotten as good a price.
I also use a rewards credit card, it pays 2% to be used on travel related expenses. Put everything on it and pay it in full each month. Between that and my hotel points I have left over from NetJets we almost never pay for a hotel room.