Now THIS is exactly what modern technology should be used for.
A guy in Japan was driving last week when a van started tailgating him. The guy said it was freaking him out . . . and then an AirDrop message appeared on his iPhone.
If you don't have an iPhone or you don't know what AirDropping is, it's a feature that lets you send photos and files to any iPhones that are nearby. And unless you tweak your privacy settings, anyone nearby can try to Airdrop you a picture.
Well . . . the AirDrop message came from the driver of the van. And it was a simple four words, quote, "Poop. Let me pass."
And now that the guy KNEW why the van was tailgating him, he pulled over . . . and let the van speed by so the driver could get to a toilet.