Irrational car journey leg speeds
Something occurred on my most recent long motorway journey that I have not encountered previously: I have the track recording panel visible whenever I travel by car. I have found it to be very reliable until my most recent journey. I use cruise control as much as possible, which my first example file, Journey legs 1, demonstrates. I saw at one point, however, the maximum speed displayed was 80+mph. I see, upon investigation, 300 instances of legs up to 108mph and erratic changes of speed as in Journey legs 2. My similar journey of 7374 legs a few days earlier in the reverse direction shows a total of three irrational legs: one at 86mph and two at 104mph - that is all. It is difficult for me to understand that gps vagaries can apply so differently on two similar journeys. I wonder if something else might be the cause?