for several years now there were requests for an instant replay [1][2] and some claims of a product that has such a function [3]. Commuting with the car, I often hear something on the radio but given traffic and other interruptions I miss it. Traffic news being the most important one.
Considering you can now get a record and replay facility in Greeting Cards and childrens toys the chip set should be cheap enough to make it into the mainstream radio. I guess that with hardware costs in bulk should be minimal, someone gave the circuitry away for free even back in 2007 [4]. Even radios that have an MP3 player built in playing from your handy USB stick or MP3 player don't offer any functionality of replaying radio broadcasts for the last 5 minutes.I really wonder why the car industry is not keen on this ? Maybe it is the copyright -- which don't look very expensive to me in the first instance for the USA [5]. I don't read the fine print though it does specifically exclude non music storage -- ideal for recording traffic news.
Will it ever happen ?
[2] http://www.halfbakery.com/idea/TiVo_20Car_20Radio
[3] http://www.spacenewsfeed.co.uk/2005/9_1_2005/9January2005_57.html
[4] http://www.scary-terry.com/dsr/dsr.htm
[5] http://en.wikipedia.org/wiki/Audio_Home_Recording_Act