Ya, sounds interesting to me too
Something I've wanted to see in instrumentation is how well I'm doing today on a particular stretch of road compared to a previous day/week/<time period>. I imagine some kind of a unit which combines the functions of a GPS (which can determine and store specific routes) and a ScanGauge. As I'm driving, I would want to see the "level of difference" between current and past FE ... e.g. 3 levels over/under maybe 0-5%, >5%-<25%, >25% (or whatever) ... so I can see at a glance how I'm doing.
my $0.02...
