[LorenPechtel]

Yup. If you don't have armor around you the only real defense is to assume you are invisible unless you know they've seen you or can't help but see you (for example, going in the traffic direction in front of a stopped car that's waiting to go--they're looking at the cars, they'll see anything else coming along.) Doesn't matter if you have wheels or feet under you, you still are invisible.