Being picky it is possible with some phones to text without even touching the phone, mine does handsfree voice texting, doesn't necessarily text what I want it to though.
Clearly that's totally different. It doesn't mean taking your eyes off the road, either to read a text, IM or email or to reply.
My car kit reads text messages but I can't reply. However my phone would so it via Google voice, but I will just wait or pull over and stop somewhere as replying is never so vital I need to do it there and then.