Idea #34: “Twitter Radio” or “SpeakTweet”

Imagine an iPhone app or a mobile browser app which … (on a few minutes delay) delivered you a radio broadcast of your Twitter stream that you could listen to in your car while you drive.  You could turn some dials to adjust how much was coming at you, or who you were listening to…or maybe someone’s on a roll and you want to just focus on one person for awhile.
Just like traditional radio, advertising could be injected into the stream if they were on a free plan.  Paid plans could be streamed ad free.
Known Implementations: None

Related:
Fascinating. Here’s part of a solution from Mark Silverberg.  Thanks Mark!