[danielweber]

Not that it's without dangers, but you don't have to look at a screen to verify text message dictation. You dictate, it reads it back.

I think better would be a standard library, like "report I'll be late," that relays my current coordinates and ETA in the message to my spouse. (And simply showing up late would make me nervous; reporting my delay relieves tension.) I'm not a brain scientist so I can't say what the total effect would be.