Get off your high horse, Nigel.
How accurate is your ASI below 60kt? How often does your INS update? The computer is certainly not quick enough to keep up with turns or changes of airspeed in the air on a second to second basis and always needs a few seconds of constant state to come with the correct answer so the data you get on the ground will never be reliable.
Anyway, who's looking? What use is it whilst you're taxiing or bowling down the runway?