I am shopping for a used Model X from the Tesla used inventory. If I purchased an X with a seat I (and hopefully, they) considered worn (on the bolsters, etc.), would the seat be replaced under warranty or are seats considered "consumables" that naturally wear out? A few of the Xs I've browsed online look like the seats show significant wear. I'd hate to buy one and then have the leather wear completely through within a year or so. I wouldn't care so much if I thought it would eventually get replaced for free.