Tesla Model X preview (photos)

Just like the Model S, the Model X has a flat lithium ion battery pack that forms the base of the vehicle. It is likely that Tesla will offer the Model X with the same three battery configurations as the Model S, although Tesla expects the range to be 10 percent to 12 percent less for the Model X due to its weight. The Model X wheelbase is about 4 inches longer than that of the Model S.