Say, pdq, there was a guy in our neighborhood when I was a kid who tried the black garbage bag trick, just as you describe, only he made the gross mistake of doing it at dusk, not dawn! And he didn't use the tape to seal the opening...

The wasps (or hornets) were all still awake, they came pouring out into the bag, and it swelled up like a balloon. So here's this guy jumping around screaming and carrying on with a huge, humming garbage bag full of enraged hornets. He can't let go of it or they'll all come out. The hornets are not so stupid, and some of them begin stinging his hand right through the bag! So what does he do? He runs over to this big hedge at the edge of his property and HURLS the bag over the hedge and takes off like the roadrunner for his front door! The explosion of hornets above that hedge was something to see...but you wanted to see it from a good distance away. Our neighbour made it inside his house with only a few stings. I think he was lucky not to have been killed outright by that misadventure.