Too rice? :lol: . But seriously, even if it does work with the E85/86 canbus, where could you mount it that wouldn't look hideous, and you'd never leave your E85 with the roof down again unless you want someone helping themselves while you're away...
On the up side, if you have satnav installed I guess you wouldn't need your phone tethered to the screen via wifi (which means having your phone connected to a charger while driving unless you want it to run flat), but you'd miss half the point of having it as the satnav function on the screen looks quite good. Free Garmin map updates once a year, too.
When they bring these out projecting onto the windscreen, without a bolt-on box on the dash, I'd have another look.