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Can anyone enlighten me as to why in-dash GPS units do not show speed but all on-dash units do? I recently did a trip to Qld and back and took along the old TomTom so I could get a real speed reading (speedo is out by ~5k/h above 100k).
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Can anyone enlighten me as to why in-dash GPS units do not show speed
but all on-dash units do? I recently did a trip to Qld and back and took
along the old TomTom so I could get a real speed reading (speedo is out
by ~5k/h above 100k).
Can anyone enlighten me as to why in-dash GPS units do not show speed but all on-dash units do? I recently did a trip to Qld and back and took along the old TomTom so I could get a real speed reading (speedo is out by ~5k/h above 100k).