I tried Lap Time Check by movie.
The Yellow Car is my G4RS in test movie
The LAP Time which indicated by movie is very exact.
the movie is 30 Frames / 1 sec, one still shot is 0.03 sec.
I will Do some more Test.. It is the section Lap Time
between A spot and B spot..
and I will Do monitoring The TOP Driver's Driving Movie.
http://kr.youtube.com/watch?v=LnQyJ0H1OoI