I recently ran across these two tools:
Google 411 - Connect to any business for free from your cell phone
Jott - "Free voice to text service. It's like your own personal assistant." Use your cell phone to call in memos and to do lists etc that are then electronically converted to text. Now, I don't necessarily promote talking on your phone while driving...but it'd be a great way to make a grocery list or whatever when you are safe to use your cellphone and want to multitask.
Let me know if you use these and what you think.