Fragile wrote:No, they cannot move under 18" while zooming but can move anywhere up to 36.
Because
GW can't write rules well, it's vague, some people take the statement "it has a cruising speed of 36 inches" to mean, if you are going cruising speed you move precisely 36 inches, while others infer it's simply a substitution for the normal upper limit of 12 for cruising speed.
Whichever one
GW meant there are much better ways to word it so as to avoid the confusion.