Correct! I use my Droid's Voice to Text and Text to Voice feature while driving. Completely hands free.
I get an incoming text and it asks me over my car stereo if I want the message read to me. I say "Yes" and it reads the message.
When it's done reading the message it asks if I want to reply. I can say Yes or No.
If I say "Yes" it tells me when to start speaking. When I stop speaking it reads the message back to me, asks if it's correct and if I want to send it.
The amazing thing is, it's near 100% accurate in converting to text what I say.
So how would this textalizer thing know that I sent a text using my Google hands-free texting app?
I've come across a number of studies in my work indicating that driving a vehicle with a hands-free phone is no less safe than using a hand-held phone. Removing one of your hands from the steering wheel isn't what makes it unsafe to drive while talking on a cell phone -- it's the distraction of the phone conversation, regardless of how you're using the phone.