Behind the Scenes: Tesla Engineer Explains Model S Tech in New Video

Tesla gets down to a structural level in a new series of videos released today about the upcoming electric Model S. Technology crucial to the luxury hatchback is explained by Peter Rawlinson, Tesla's vice president of vehicle engineering, in three videos you can find below.

We're expecting to find more information about the Model S at the Detroit Auto Show next week but, for now, we've got these videos highlighting the aluminum structure.

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"We're particularly pleased with this," Rawlinson says, "it's a very advanced form of architecture, which is a combination of castings, extrusions, and stampings."

Currently, the Model S is in its Alpha testing and development stage. In other words, it's in stage one of two. As though having an electric powertrain wasn't enough, the Model S will also distinguish itself from other luxury vehicles with its seven-passenger seating.

"Model S has such extraordinary package efficiency, it's possible to endow it with a third row of occupants," Rawlinson says.

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Underneath that third row you'll find the compact electric motor and rear suspension -- we're eager to see just how comfortable that third row will truly be.

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Rawlinson continues in the third video, discussing how the battery pack helps increase torsional rigidity. Many still doubt whether Tesla will be capable of introducing the Model S quickly enough and selling it at a reasonable price.

"We have a very lean team," Rawlinson says. "We have people from different disciplines sitting right next to each other and sharing the collective experience of designing and packaging the car."

Source: Tesla

They are redesigning the battery box. So maybe they can start using better batteries. There are a lot of off the shelf solutions. There are industrial grade and even military grade batteries with much better power and energy ratings. Some are double what they are using now. So right now Tesla uses consumer grade batteries used in toys and throw away consumer goods though tesla protects them with safety technology. If Tesla used military grade lithium with thionyl then without changing anything else the range of the battery pack would more than double. So one of their options could be a 700 mile pack (though prohibitively expensive, 5 or 6 times the cost. These military grade batteries are used in space to Tesla should know about them) Use the same number of cell as in the TESLA sport and the car would go around 600 miles. This would give pack 25 percent more voltage for the same number of cells. So the battery pack could be made smaller. or that extra 25 percent voltage could be used for other electronics. Plus the pack would still travel more than 600 miles per charge even with 10 percent less batteries. Plus the pack would last 25 years. The main thing is that this year the old battery packs of 250 miles are obsolete already. With the 700 mile battery packs, after running the car into the ground with races you could throw the car away, keep the battery pack and put the old pack in a new car for another 10 years.

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