Nearly all new cars have on-board navigation.But still many prefer old-style external navigators.
One of the reason is they have better ergonomics: they can be plugged on the windshield so they are in the line of sight while driving.
The new Yaris Hybrid is no exception: the infotainment system is way too low on the cockpit:
With the help of GIMP, I've tried a little redesign:
There's enough room for an higher navigator position, and lower air outlets would help air circulation also.
There's a thread about this on the Hybrid Synergy Forum here.