While they’re busy loading your bike, hop into their driver’s seat. If you’re lucky, maybe they left the keys in the ignition, free car! If not, either surprise the fuck out of them and ask “Where are we going?”, or call the law, or just beat the shit out of them, your choice.
True, that’s not exactly a common built in feature.
Mine is made of almost pure chrome plated metal, maybe I should electrify it… ⚡
You could also train a dog to guard it.