Not sure if this 1 is useful or not, for an idea I had earlier today, a car computer based on free or nearly free technology...
That looks a bit basic but assuming I can plug usb fm transmitter 2 into a raspberry pi then my car computer can handle all the sound needs without any rewiring, just broadcast over fm just like the itrip type device I have right now for the ipod. It might not be the best quality but I can give it a go without rewiring the car.
raspberry pi: Credit card sized super cheap computer, awesome.
Paulʼs weblog - I live in A sleepy town in the deep South. Wed + dad to 2, I am a full-stack web developr, and I do js / node, some ruby, python, php ect ect. I like pubs, parkrun, restaurants, home automation and other diy stuff, history, family tree stuff, TV, squirrels, pirates, lego, + TIME TRAVEL.