Startup Idea : anytime transcription

for me, i find that one of the most thought/idea provoking environments is probably the shower. but what happens when i get that idea, that idea that could change the world, but I have nowhere to write it down? what do i do when the idea hits me as i'm driving down the road but can't risk putting my life in danger by writing down my idea? what if there was some sort of device that could transcribe your voice into text and send it to a database app on your phone (along with the audio as backup in case the transcription is not accurate)? ideas people. wadaya think? connect directly with me on twitter @treyda_