Now that the long promised 8.1 has started arriving, has it addressed the problems introduced in 8.0? Is XM radio still unusable on the new cars because of the loss of the station slider and station list, forcing single stepping XM stations one at a time? Is the media player remembering the current song and position after a resume from sleep or after listening to another radio source? Has the browser been fixed, or does it still have problems displaying some websites, including Tesla.com? And have there been any new "improvements" added that degrade usability or new bugs introduced?