From a completely non-lawyer viewpoint, I'd suggest that to propel a bike is to make it move in its normal way, ie with its wheels turning, along the ground.
If you were to pick it up, it's moving but it's not being propelled.
If you were to take it to bits, it's moving but it's not being propelled.
What if you were to leap off it before the line and let it ghosty across whilst you run behind it (not touching it) then jump back on at the other side?
From a completely non-lawyer viewpoint, I'd suggest that to propel a bike is to make it move in its normal way, ie with its wheels turning, along the ground.
If you were to pick it up, it's moving but it's not being propelled.
If you were to take it to bits, it's moving but it's not being propelled.
What if you were to leap off it before the line and let it ghosty across whilst you run behind it (not touching it) then jump back on at the other side?
PS: IANAL