I did try TomTom Go app, but that crashes on startup - I presume it need some of the missing Google services. I did have to install a file manager (ES Explorer) to put the Sygic obb file (opaque binary blob) in the correct place and a screen rotator to force it to run in landscape mode It took an age (about an hour) to download the UK map over my home wifi, but it is all there now. I have now tested this out and have installed several apps including Sygic GPS Navigation & Maps - and it works !!! Recently S_Mike posted a small app that allows you to allow installation of other apks (android packages) from a USB stick and set the permissions to allow them to run whilst driving: There has been a very interesting thread over on xda that I have been following with interest.
