I've been playing with a Blue screen movie in Dashware so I can use Chroma Key in Adobe Premiere to isolate the gauges then make them transparent. It simplifies the process in general and takes out a step which improves video quality. In Premiere you can duplicate the gauge video and mask some gauges so you can hide/show them only when it's relevant. For instance racing along flats it's not necessary to show the route profile. Still playing.

Chasecam promises a rotating compass which will be an improvement on their static compass. All I need is atmospheric info (Chung on a Stick?) and calculations for drag can be made. Fun time wasting stuff. GL