“It is fully functional. It’s about on par with Tesla
Autopilot,” Hotz said. It doesn’t have a lot of sensors
as the Comma One relies on built-in car front radars and
comes with a camera.
My car, a Passat 2016 has both of those and does an okay job keeping itself in the lane and such. Only with VW would be more aggressive about updating their cars firmware. They've got all the components to be pushing forward. But just like all the other car companies they'd rather wait until 2017 models to make any improvements.
Its probably built into their old school model that even if they could do firmware updates (likely still via USB), that they don't in order to get you to replace the entire vehicle sooner. Just speculating