They can also be referred to as up-doors or falcon-wing doors. When the doors are open, they are parallel to the floor. This ...

Called falcon wing doors because they are said to resemble that bird of prey in flight, they open upwards, hinging in two places – the somewhat similar gull wing doors only have one hinge ...

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 .