The long, speculation-drenched week that followed Elon Musk’s “unveil the D” tweet is finally over. Tesla Motors Thursday night (Oct. 9) announced an all-wheel-drive (awd) Model S with semi-autopilot features.
The “D” stands for dual motor, while those who guessed it was “D” for “driverless” were just a little off the mark. With the D series, Tesla is offering, in essence, its own version of ADAS (advanced driving assistance system). Indeed, some featured in the D line are more like ADAS on steroids.
After the announcement, some in the investment community were quick to judge, calling D a disappointment.
The supposed letdown is that Tesla’s Model S P85D only offers “the predicted level of performance, and little more.” Further, the continuing slippage in Model X deliveries is a big concern. Model X, unveiled in 2012, won’t get to reserved buyers until summer 2015. Model X, about which Musk bragged to Tesla shareholders in July, calling it “amazing car that will just blow people away,” is an all-electric vehicle, supposedly more stylish than a minivan, offering more performance than an SUV.
Elon Musk shows off a dual-motor all-wheel-drive
But of course, the last night’s event wasn’t about Model X. So, first, let’s consider the D.
The dual-motor Model S comes with a second electric motor mounted above the forward axle to power the front wheels. It teams with the electric motor that sits over the rear axle in all current Tesla’s EVs.
The dual motors provide quicker acceleration, better grip, and longer range, according to Musk. The second does adds weight, but Tesla claims that it automatically adjusts its use of the two motors to maximize efficiency.
The second motor is tuned in the P85D for faster acceleration, says Tesla, so that the car races from 0 to 60 mph in 3.2 seconds, compared with 4.2 second for the current P85. Tesla offered a test drive at the media event last night, which prompted one giddy reporter to gush that it “feels like being in a rocket ship."
The second motor is said to be tuned toward greater efficiency in the lower-trim models. Tesla says the 60D will get 225 miles on a charge, compared with 215 miles for the base model. The 85D will also get an extra 10 miles, maxing up to 295 miles. Not a huge difference, but nonetheless an improvement.
As for the ADAS features, Tesla is clearly playing catch-up with competitors. Features like lane-departure warnings are commonplace. But beyond this, Tesla offers a few gimmicks that other premium rivals -- Mercedes-Benz and BMW -- haven’t yet introduced.
The new Model S, for example, changes lanes automatically when the driver flips the turn signal. It doesn’t require drivers to keep hands on the wheel (although drivers are legally required to pay attention all the time).
The car will read speed-limit signs and adjust to match the posted speed.
And it does park itself, but not in public lots -- only on private driveways. Musk said that drivers can get out of the car in their driveway and watch it nose right into the garage -- assuming that the garage isn’t already full of other stuff.
It gets even better.