Where can I have my Bentley Continental GT's satellite navigation upgraded?

I am really pleased with my Bentley Continental GT, but sadly the satellite navigation is poor, even compared to a basic Tom Tom. Please could you suggest companies that can help with an upgrade?

Asked on 5 June 2010 by paulbass

Answered by Honest John
Forget the car system and get a suitable Tom Tom. May look untidy, but will be effective.
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