One problem with all of these additions is that they can be a distraction from driving. Taking your eyes off the road is bad, and touchscreen interfaces are generally not conducive to developing "eyes-off" muscle memory, particularly if they lack haptic feedback. It's not that touch interfaces are inherently bad, but they do let designers get away with shipping poor user interfaces.
"The problem is that the touchscreen gives people a lot more flexibility in how they would create an interface, which can really quickly lead to complexity," said Mark Webster, director of product at Adobe and an expert on the use of voice in UI and UX design. "What was so fascinating to me about the Navy decision [to replace touchscreen bridge controls following two collisions] was that, I am sure if you look at that interface, it's very complicated. So it really probably isn't the touchscreen. That is in and of itself the problem," he said.
"If you use a touchscreen in a car that is complicated, it's distracting and not a good experience. But something like Apple CarPlay, or Android Auto, that is bringing in an interface that you're really familiar with, that feels natural, intuitive, that you're used to dealing with on your phone all the time. That's actually a place where I think the design of that interface in a touchscreen works really well for that," Webster said.