strange mating-dance

About a week or two ago I was treated to a wheelie-fest out front.
Actually it was only two motorbikes, but holding a wheelie almost a mile seems remarkable to me. (Cue Bluster-King.)
For those not knowing, we live about 200-300 yards south of a sharp right turn in Route 65. Actually it used to be a four-way intersection, but so many were turning right the state regraded it, so that the right-turn — 90 degrees — is unstopped; as is the left-turn going north.
So 65 in front of our house is a drag-strip. The sharp right-turn empties into a long straight south to 5&20.
As such, motorbikes/hot-rods/whatever accelerate up through the gears after making the turn. People make the turn at 25-30; but a good sportbike could probably do it at 60+.
So crotch-rockets have blasted by our house at over 100. Blatting Harleys do it too; although they’re only good for about 70+. (The speed-limit is 40.)
This time though, the approaching motorbikes weren’t winding-out. Whatever was coming was holding constant revs.
First a thumper (one lung) passed, its front-tire about eight feet in the air. Then a crotch-rocket passed, also at constant revs, also with its front tire eight feet in the air.
Down the road they went; front-tires aloft. It looked like a strange mating-dance.
How does one steer if your steering-member is off the pavement?