Only 1 tyre provides grip for forward propulsion 
When I wrote that it wasn't clear it was a drag race. A normal race will require 2 tyres to play their part.
Why don't you comment that on an F1 car ot only uses 2 tyres for grip for forward propulsion while you're at it?
FWIW when accelerating on my bike I had the use of one tyre and the soles of my feet as I scrambled to push it along a bit faster
Never underestimate the power of stupid people in large groups.
Or as Friedrich Nietzsche put it, "In individuals, insanity is rare; but in groups, parties, nations and epochs, it is the rule."