slick and useful. Probably won't work out of the box with repeaterbook software (android) because he firmwared his interfaces to report something that normal ones do not and i couldn't be assed to reverse it.
I don't know that repeaterbook has anything to do with it actually, but there's android software that uses your GPS and a bluetooth module to control your VHF/UHF radios, you can use it to automatically change repeaters as you're driving or whatever - based on repeaterbook's database.