I just had a wide-ranging discussion about the Lucid Air with Zak Edson, the head of Marketing and Sales at Lucid. He was laudably forthcoming with information about what is and isn't yet determined about the Air. Here's a synopsis of the discussion:
The rear floorboard in cars with the larger battery pack will be 3.15" higher than in cars with the smaller battery pack. The 1.6" legroom difference between the packs shown on the Specs page of the Lucid website is due to a difference in measurement methods. The Dream Edition will be available only with the larger battery pack. While the Grand Touring will premiere with only the larger battery pack, the smaller pack will become available later. However, the power output with the smaller pack will be less than the 800 hp output with the larger pack due to voltage differences.
For others such as I who have been confused by conflicting video shots and comments about rear legroom from video reviewers, here's the story. The configuration of cars at press events does not necessarily track the production versions. At the September 9 reveal, the white car had the larger battery pack, and the gold car (though a Dream Edition) had the smaller pack. At the Manhattan press event, the Zenith red car had the smaller battery pack (though billed by the reviewer as being the 517-mile-range version).
The front seats will leave toe room for rear seat passengers, the height of which will diminish slightly as the front seat is run further backward. However, a key measure of leg comfort is the angle at the knee joint. A Tesla Model S has a knee angle of 89.8º and the Lucid an angle of 95.2º with the larger battery pack. Though nominally small, the difference actually contributes significantly to seating comfort. Combined with the greater length of the Air cabin compared to the Model S, the rear seating position with the larger battery pack should be comfortable for even tall passengers.
Some other questions Zak answered:
The Air will have regenerative braking set up for one-pedal driving (like Tesla and unlike the Porsche Taycan).
The rear seat will have a fold-down center armrest, although the cars initially on display at Design Studios probably will not have them.
Although the Air will have soft-close doors at the start of production, the full power-operated doors will not be available initially, due to delays in the supply chain.
The car will not have full-spectrum active noise cancellation mentioned in early promotional material. This is due to the hardware and software complexity of such systems in a car environment. However, the Air was benchmarked against the Mercedes S Class for NVH (noise, vibration, and harshness), and the Air numbers are better.
Closing impressions:
While I have been as frustrated as anyone by internally-inconsistent information on the Lucid website and elsewhere about the Air, I am convinced this is the result of an organization running in a hundred directions at once as it tries to communicate with the market about a car still undergoing development. My conversation with Zak Edson today, as well as the frequent contacts I've had with his Sales organization, signals to me a company that is extraordinarily attuned to the customer. While they can't give everyone everything they want in a car, they're putting Herculean effort into understanding those desires.
I don't know what I'll finally decide once I try on a Dream Edition for size at a Design Studio, but I truly want the Air to work for me. I think the Air is a technological tour de force, and I think the organization is determined to put a quality product on the road.