Help?! My son only sleeps in the car while driving

Ma

So my 6 week old is a terrible napper. He does not nap at ALL unless I take him out for a drive in the car. I’ll drive for two hours just so he can get a 2 hour nap. Once we’re home, he’s awake again. I’ve tried everything else. I even tried a swing! He still doesn’t nap. Anything else to mimic a car drive?