I searched and couldn't find a thread about the indoor cover -- saw some about the outdoor cover. Tesla site has it for $350 Model S Indoor Car Cover Tesla Motors But they add $19 shipping and $22.14 in tax for total of $391.14 (I guess for states with higher tax you're gonna be over $400). How necessary are the front wheel vents for cooling? The plug flap for charging is nice. And it looks pretty darn good. But $400?