More expensive models allow you to choose the frequency of the track points:1. by time interval (e.g. 1-sec logs) or 2. by distance intervals (e.g every 10m or even 1m) or3. by Auto or Intelligent mode which works on the change of heading (the Nuvi 205's Trip Log works in this mode and a track point is triggered when there is a change in heading of 5-7 degrees or more.)If you are lucky enough to b