Certainly if voice input works reliably, that would be great. I recetly purchased a Ford Fusion Hybrid primarily because of lack of built in BlueTooth connection, but the voice command doen't work very well and people complain about background noise when I talk on the phone. Having said that, because the activation threshold can be computer controlled, it would be easy to require an even heavier press when the car is going over bumpy road.
This is an interesting piece and very educative. But, I still don't see how tactile pressure sensing completely eliminates the problems of accidental input, especially when it comes to driving under rough conditions. You could just as easily apply too much pressure on the wrong button as you would on the right one under these conditions. Maybe it should be coupled with voice inputs, even if only to reduce the buttons on the screen each time.
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