Tesla’s Touchscreen UI: A Case Study of Car-Dashboard User Interface

While this is a big screen (three times the area of an iPad), it can’t show everything — so,   making matters even more complicated, in Version 9 of Tesla’s operating system, some features are placed inside an expandable menu. Having the controls at the bottom of the screen also means more time for the eyes to move from the windshield to the menu area, and also less of a chance that people will be able to use their peripheral vision to attend to unexpected stimuli that appear on the road when they are busy interacting with (and looking at) the touchscreen. The rear-view camera (an essential feature in a car whose rear-windshield view is partially blocked by the backseat headrests) is available under the arrow menu, as is the cell phone.

Source: www.nngroup.com