We'll soon find out for ourselves when we fly United Flight 1 today, but supposedly, Dreamliner air is rare up there.
New cabin environmental systems allow control of air pressure and humidity.
Dreamliner's cabin pressure is set to the equivalent of 6,000 feet above sea level -- compared to the traditional setting of 8,000 feet. Feeling like you're at a lower altitude lets the body absorb more oxygen, making passengers less susceptible to airsickness. Humidity in the cabin is supposed to feel more comfortable, too.
Everybody talks about the windows. By pushing a button under each one, it activates energized gel embedded in the windowpane, which darkens or lightens the glass. No shades necessary.
Check back here with CNN.com today and we'll let you know what these tech-laden features are really like.
How does it ride?
It's a mystery how it works, but the Dreamliner comes equipped with gust suppression technology that is designed to smooth the ride during moderate turbulence. Boeing is keeping its cards close to the vest. Suffice it to say sensors on the aircraft respond to turbulence and send command signals that adjust parts of the wings. Result: smoother flying, says Boeing. We'll check it out for ourselves.
"It looks pretty awesome, although I'd just rather not have turbulence -- then you don't need the gust suppression," jokes Snyder. "But I think it will be interesting to see how that feels, and how the plane handles it."
How did we get here?
Boeing used to think airlines felt a need for speed.
But the company soon learned it had miscalculated. What the airlines really wanted was efficiency, triggering a trend toward fuel-sipping, lightweight, long-range airliners.
Here's what happened: In the early 2000s, Boeing was brainstorming the next generation of airliners -- the first that would be built largely from lightweight carbon-composite materials.
These new planes would jet across the nation at about 650 mph -- nearly the speed of sound. They called this idea the Sonic Cruiser.
But as oil prices rose, the Sonic Cruiser took a dive. Boeing abandoned the concept, keeping the idea of a new lightweight, carbon-composite airliner. Speed was out, efficiency in. By 2003, the project had a name: Dreamliner.
This year, Boeing's rival Airbus will follow Dreamliner with its A350 XWB, another sleek, long-distance fuel-sipper that can carry 200-plus passengers.
CNN's Thom Patterson boards Boeing's Dreamliner later today for its first domestic flight on a U.S. carrier after it was grounded earlier this year. Check back for updates later today and follow his progress on Twitter.