The Sion has other advantages apart from the solar panels; it has a socket for charging other things (e.g. other electric cars), and custom built-in software an

The Sion has other advantages apart from the solar panels; it has a socket for charging other things (e.g. other electric cars), and custom built-in software and smartphone app for renting it out when you're not using it. This means you can make money from it when you're not using it.