The Tesla Model X's falcon-wing doors are likely the primary reason why the debut of the all-electric SUV is being delayed. Watching Tesla Motors first show off its Model X SUV at a blingy event ...

There have been many reports over the years that the falcon wing doors' development delayed the Model X's launch. For example, Musk admitted in 2014 the components' engineering caused setbacks .

The Model X's falcon-wing rear doors swing up instead of out, making it look like some kind of spaceship. They use sensors to steer clear of cars parked on either side and to avoid garage ceilings.

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The Tesla Model X may be the premiere electric car available. It's definitely the first to have seating for 7 and those "falcon wing" doors are one of a kind. With a standard battery configuration ...