We all know it is dangerous to text and drive. My problem is that I feel I am being rude if don't reply and at least let the people know I am driving and that is why I can't respond. Of course there is not always convenient place to pull off the road to do this and I don't always have the time to stop. So, what I would like is an app that sends out an auto reply for me. Of course there are many apps out that that do this, but you have to remember to turn them on a set them up before you start driving, which is not good for a person like myself who is notoriously forgetful when it comes to things like this. So, what I would like is an app that automatically detects when I am driving based on my rate of travel. An app that I can set to auto reply if my phone is moving in excess of 10 miles per hour, just for example. Are there any apps out there like this?