Speedster
Honorary Master
I've done this for years now too. I set my cruise control based on GPS speed, not speedometer. On the X-Trail it's 139kph for 125kph on the GPS.And in addition, Speedo on car doesn't reflect true speed. With waze, on this current car I have , when car is showing doing 130km/h for example, true speed is only 122km/h. Means no traps. Haven't received a speeding fine using this methodology.