It's no secret – they've promised and demoed that capability for a while – but the rollout has been slow, and may be primarily motivated by gaming the tax-credi

It's no secret – they've promised and demoed that capability for a while – but the rollout has been slow, and may be primarily motivated by gaming the tax-credits available if the Model S has a 'fast-fueling' option. See for example: http://www.latimes.com/business/autos/la-fi-hy-tesla-battery-swap-harris-ranch-20150310-story.html http://www.latimes.com/business/autos/la-fi-hy-tesla-battery...