I think it's a good segment choice, and concur with the idea that bigger vehicle allows for bigger battery. With 250 to 300 mile range, that's an impressive amount of distance for a ski weekend from NYC to New England or shuttling to and from the Hamptons.

According to Car and Driver, and from MB R&D Board Member Thomas Weber...

"the car will be “cool and emotional.” We expect the fully electric crossover to be a standalone vehicle, separate from any current Mercedes-Benz model line. It will compete with the upcoming Audi Q6 and the Tesla Model X."

Source: Car and Driver