Gap is the driver's best lap in a session against the fastest lap in their class in that same session (zero is fastest in class), shown as time lost and as a share of the lap, so conditions cancel out and tracks can be compared. Typical is the median session.
Thank you for your letter and thoughtful ideas; many of your points have been discussed and given serious consideration. Hopefully some will be implemented in the future.
In GCR section 9.1.8.B.13.a, make changes as follows: "Mirrors per GCR Section 9.3 Mirrors. Additionally, there shall be at least two (2) mirrors, each with a minimum 100 55cm² (15.5 8.53 in²) of reflective surface."