Yes, I am talking about a particular application, which is an all-terrain, all weather vehicle. Which is why my Jeep has 33" tires, a hardtop, A/C, solid cast-iron oversized differentials, and an extra set of gears. We wheel for 8-9 hours per day, some in high range, some in low, and I utilize all five gears in the transmission in both high and low range. But when "crawling" I am in low gear (4.02), low range (4:1), and the 4.11 axle gears make the "crawl ratio" 66:1, with the famous 50-year old Jeep I-6 engine (originally in the AMC Rambler) that makes more low RPM torque than many farm tractor engines. The engine is idling, no gas pedal, while the incredibly low gearing and the 66:1 torque increase from the gears allows it to idle over any rocks that can be conquered with 33" tires. When the incline is steeper, you add throttle, and the engine will make 78% of rated torque below 1000 RPM before stalling, which is simply not found in any other engine. The same vehicle has an overdrive 5th gear, a 1:1 high range, and a 2WD option for the highway, where it will cruise comfortably fully loaded at 85 mph, but not economically, because of the boxlike shape.
Elon Musk (or you) would be foolish to attempt to build such an EV, because of the extreme specialized application. Note that EVs are not competing well even for road-only cars. The next market segment Tesla needs to address after the roadster/sedan/SUV segments is a light 2WD pickup truck. Ford is the competition there, the aluminum-body F-150, which is the most popular vehicle sold in the US. His SUV, which is not yet in volume production, looks like this:
....and Consumer Reports justifiably beat them up after testing it:http://www.consumerreports.org/suvs/2016-tesla-model-x-review/
However, I subscribe to two 4WD magazines that were far less kind than CR about this "SUV" that forgot that the "U" stands for "utility". He didn't understand his market.
Edit: The AWD Tesla sedans have 2 motors, not four. One for the front wheels, and one for the rear. The P85D which is the 2016 AWD sedan I have actually seen on the road, has the standard Tesla rear motor (463 hp) plus a smaller (271 hp) motor in the front. I don't doubt that the P100D exists, with two of the large motors and a bump from 90 KWh to 100 KWh battery storage, but they are so rare I've never seen one.