writes "I'm looking to a GPS unit, in-car windshield mount, for my wife. I know there are some units on the market already that run Linux, and I'd like to lend them my supports over their non-Linux brethren. However, I am quite new to looking at them and looking over TomTom's and Garmin's website does not provide any info on what OS they run. Android or another custom Linux is okay; and I need maps for the U.S.A. So, what do you recommend?"