A Tesla Model X weighs
A Tesla Model X weighs between 6,581 to 6,878 pounds, and as the article states, it currently has the best electric SUV range of 325 EPA rated miles using the 18650 type lithium-ion cells. The Tesla Model S sedan weighs between 4,769 to 4,941 pounds and currently has an EPA rated range of 370 miles using 18650 type cells. Since the new 2170 cells can have an energy density of more than 20% over 18650s, as Elon alluded to, soon Tesla should have a vehicle with an EPA rated range of over 400 miles when switching the 2170 battery cells. However, Elon is not saying a large SUV will have a range of 400 miles.
A Cadillac Escalade with an internal combustion engine vehicle weighs between 7,100 to 7,300 pounds. Even if an EV version could be slimmed down to the weight of a Model X, it is difficult to take the anonymous source seriously that a true luxury Escalade could achieve an EPA rated range of 400 miles by 2022. Perhaps a stripped-down version might be able to claim something around 400 miles based on the European standard.