Some cars (e. g. BMWs) have a line that goes to the radio that tells of car speed then the stock BMW radios adjust volume. There is a way to change how much the volume is altered due to speed as well. I haven't put a multimeter to the line yet, but its probably a sliding voltage or something. Trouble is I don't know enough to write a kernal hack to take advantage of this yet (although I have a EE/CS double major at duke, maybe in 2 or three years). In the mean time, if I gave information on the voltage, might someone be able to right something to accept that wire from the serial port? Preferably I would be able to adjust a config file to change how much volume adjustment there is. I am just a college student, but maybe I could provide some incentive/favor to someone . . . .

Thanks,

- John

P. S. Maybe in other cars you coud tap into the spedometer line or something for a similar effect.

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