I've been known to do all of the above, plus savoring the old car smells, gently touching the wear patterns on the upholstery & door panels, and closing my eyes to remember who was in the car with me, where we drove, what we did, on any of the hundreds of memorable days of yore.
It's the best meditation transportation machine I've ever found. With the engine off. Or even in the years it didn't have an engine at all.