What is it? The electric-powered Model X is seven-passenger SUV is based on the Model S sedan, with giant gull-wing doors over the forward-facing rear seats.

The most distinguishing feature, the so-called “falcon” doors hinge in the middle to enable them to open in a snug parking space.

Like the Model S, the Model X has a large, flat battery pack under the floor. It comes in two sizes: The base, 60-kWh battery should give the car a range we estimate to be about 150 miles. The larger, 85-kWh battery pack, should amount to just over 200 miles, depending on the motors.

Three drivetrains will be available. The base model will be rear-wheel-drive with a motor on the axle. All-wheel drive models will have an additional motor on the front axle. The fastest version will be all-wheel drive and use more powerful motors to achieve 0-60 mph acceleration in less than 5 seconds, Tesla claims.

What is new or notable? The flat chassis and electric drivetrain will allow space for a trunk in the front, in addition to limited cargo space behind the third row of seats.

The Model X will also use the 17-inch flat-panel control screen from the Model S, along with its digital instrument cluster, creating a screen-intensive dash.

Prices are said to mirror those of the Model S, which starts at $57,400, and steps up to more than $80,000 with its largest battery pack and options. Both cars will be eligible for the federal $7,500 tax credit.

When will it be available? Late 2013.