Let's hope that airliner is outside the dome, or things could get very interesting in a quarter of a second.
Welcome to Clean Air Park (1959) -- or the Rather Stuffy Park as they called it after the ventilation system started to break down. Can't be bothered to improve local air pollution standards? Then simply dome over the entire metropolis, fill it with overwrought architecture, and watch everyone pile into the single monorail because motor cars have been outlawed.
Hours of fun for all the family!