Tesla just trademarked the Model E.
ASSUMING that this is Blue Star, it lets us in on part of Tesla's naming strategy:
If we look at the order of the English alphabet, letter X comes after S comes after E.
In terms of price, Model X is more expensive than Model S is more expensive than Model E.
So, the distance from the letter A actually describes how premium the vehicle actually is!
The question is, what will Model A cost?