Could be true but sounds suspiciously like the urban legend of “gang initiates drive with their headlights off and if you flash your lights at them they will turn around and shoot you”, etc
I got an email warning me about people in the WalMart parking lot asking you to sniff perfume samples and saying these supposed samples are actually ether and you will pass out and they will stuff you in a car and kidnap you. I think that one was false, too.