I do not text and drive. I do however want my family to know, that I'm not just ignoring them when they try to reach me. I don't even read my texts when I'm driving - like to see who they're from.
So I installed this neat little program some time ago:
SMS Minder
http://forum.xda-developers.com/show....php?p=3138123
I turn it on before I get in the car. Each time I get a text message, it sends out an automatic reply for me.
Mine reads: Auto-reply: I'm driving and will check my SMS later. If urgent, please call me instead.
Then I can use my handsfree and people know right away to call me instead of wondering and waiting, why I'm not answereing their sms.