Have seen these on e-bay for under £20 (TomTom want 40).
After having hit 3 major stoppages on the M6 last Friday, thereby turning a journey of 2 and a half hours into over 4, I thought about this a lot. Does anyone use one on here who could tell me the pros and cons? Is it worth the money and would it have helped me on the aforementioned trip?

Steve