Yaknow... nobody ever wants to believe anything is faster than they think it is...
unless it's theirs, of course You see the same phenomena amongst car buffs,
though for them it's trivial to just take it to the local "legal" dragstrip and
"put up or shut up", as it were. I'm very surprised that someone hasn't marketed
a set of speed traps for you guys, by now. It shouldn't be that difficult to come up
with a two pylon system, and have the plane carry a small transponder unit
that starts the timer as it passes one pylon, then stops the timer as it passes the second.
Surely with all the claims, and all the disbelief lately... it won't be long now

(I know that's groundspeed, not airspeed... but then again, so is the gps)