I’ve already got a working cloaking device on my car, everytime I go anywhere, I can count on a bunch of ignorant SOBs pulling out in front of me, damn near causing a wreck, and the only possible explanation is that they can’t see me, which means that my cloaking device does NOT have an ‘off’ switch, and that really p*sses me off.
If I remember correctly, I think “Invisible” is one of the 10 Stages of Drunkenness.