It has a fold-down seat like its less-expensive Chevrolet Impala cousin and unlike Cadillac’s new CT6 sedan. “GM offers rear folding seats on a majority of its large sedans.

The fold-flat-second-row setup was previously offered only on the 5-seat version of the Model X. The 6-seater still doesn't get second row second that can fold flat.

I was randomly upgraded to a British Airways business-class seat with an $11,680 value. I liked the experience, but I wouldn't pay full price for it.