Hilariously, this "demonstration" actually shows off more of this (fake) battery swap system's functionality than Tesla's first battery swap demonstration... and that earned them tens of millions of dollars (if not hundreds) in "bonus' CARB ZEV credits!
Musk claimed at the time that this battery swap process was fully automated... but revealed precisely zero about its actual functionality during the "reveal" event. Watch for yourself.
This "demonstration" (some might call it a dog and pony show) was literally all Tesla had to do to earn almost double the ZEV credits for every car it made. No proof it was actually being used, or was really automated required. More here: dailykanban.com/2015/05/27/ana…
Demonstrating swap boosted Tesla from four credits per car to 7 credits per car. We don't know what these credits actually sold for (another issue with the program is its lack of transparency), but the fine is $5k/credit. Tesla could have earned up to $15k/car extra for swap! 
By the time I discovered this in 2015, CARB's own staff had been warning that the fast-refuel bonus credits were being gamed since 2013 and recommended shutting it down! I was baffled to find that CARB members themselves weren't at all bothered though. dailykanban.com/2015/06/23/tes…
Of course, almost every Tesla quarterly profit has been made possible by revenue from selling these credits. If Tesla was getting even $10k/car for those 3 bonus credits, its 2013-14 "bonus" revenue would have been over half a billion dollars (~55k production). From swap alone!
If ZEV credits were directly funded by taxpayers, this would have been a huge scandal. The only reason it wasn't is because those credits were paid for by the "legacy" automakers. So Tesla was making hundreds of millions in pure profit from its competitors... for a demonstration!
Anyway, stumbling onto this battery swap scheme and unraveling exactly what was going on with it made me realize Tesla was willing to do what other companies weren't. This was when I started seriously looking into the company, resulting in this book: powells.com/book/-97819488…
