That's why I like listening to Schubert while I'm driving. Like I said, it's because all his performances are imperfect. A dense, artistic kind of imperfection stimulates your consciousness, keeps you alert. If I listen to some utterly perfect performance of an utterly perfect piece while I'm driving, I might want to close my eyes and die right then and there. But listening to the D major, I can feel the limits of what humans are capable of - that a certain type of perfection can only be realized through a limitless accumulation of the imperfect. And personally I find that encouraging.