Sorry to be a wet blanket guys, but it's still dangerous to text while driving, even when using Siri. I think studies have shown that your attention is still being diverted, even while just talking on the phone via bluetooth or another hands-free means.
Just saying, in the holiday spirit, be safe. And if you can, avoid texting while driving unless you really really have to. I totally understand there are times when you just have to.
🙂