After months of teasing, Tesla officially pulled the cover off of its first crossover, the Model X, this week at a special event near its assembly plant in Fremont, Calif. The all-electric SUV features three full-size rows of seating (unlike the Model S sedan with two rear jump seats) and can accommodate up to seven adults.

The Model X’s most eye-catching feature is its gullwing doors, which Tesla calls “falcon doors.” Tesla claims they are not just there for aesthetic reasons, but are more practical than t…