'The number and letter buttons are quite small and cramped together, and there's no included stylus, so you have to pay close attention as you enter addresses.'
'The preferences are located in various locations all over the device and can be difficult to find.'
'All too often, when we'd struck a via point, the system just sat there or displayed a distant overhead map leaving us unable to return to the 3D 'cockpit' view without re-entering everything.'
'the screen is difficult to read on sunny days, which presents a serious problem if you are driving.'