For 10 points, name this primary means of transportation for the privileged castes in the World State from Brave New World.
Upon metaphorically perceiving the solid earth to be one of these objects inside an air pocket, a character vomits behind a clump of laurels near a factory where they are being made. From the vantage point of one of these devices, two characters on a date see a crematorium from which phosphorus is being collected for fertilizer. After hitting his head on one of these things, a black man kidnaps and has sex with a blonde woman inside of one, in a "feely" titled for Three (*) Weeks in one of these devices, which come in "taxi" and "sporti" variants. Near the end of the novel, a crowd of people descend in these devices to watch the spectacle of Lenina Crowe being whipped by John the Savage. Gammas, Deltas, and Epsilons travel in high-speed monorails instead of in these vehicles. For 10 points, name this primary means of transportation for the privileged castes in the World State from Brave New World.
Upon metaphorically perceiving the solid earth to be one of these objects inside an air pocket, a character vomits behind a clump of laurels near a factory where they are being made.
helicopters [or taxicopters; or sporticopters]