Almost lost hope before getting to it, but thankfully a sane reply finally appeared. Seems the answer is about 150mph. 18,000 rpm / 9.73:1 gear ratio = 1850 wh

Almost lost hope before getting to it, but thankfully a sane reply finally appeared. Seems the answer is about 150mph. 18,000 rpm / 9.73:1 gear ratio = 1850 wheel rpm. 19” wheels have 27.7” diameter, so... 1850rpm * 27.7in diameter * 3.14159 * 60min in hour / 12in in foot / 5280ft in mile = 152.45mph