I have enough room to do push-ups, sit-ups, and throw some jumping jacks into the mix, and usually, I’d ignore the luxuries and focus on my duty. But Jane is my girlfriend. This is the Cobalt family jet, affectionately nicknamed Heathcliff by Audrey, which outsizes all the other private planes and can comfortably carry all three famous families. It’s also outfitted with four bedrooms, five lounges, a twenty-person dining room, cinema and fitness area.