I have had the privilege to buy cars from Porsche, and honestly, their updates from the 997.1 to 997.2 (PDK, Direct Fuel Injection), and 997.2 to 991 (a lot...), it's very clear that it is far more than a .0003% improvement. No company is perfect, and Porsche has their flaws too, but these sorts of major "bait and switch" changes (range, seats) simply are not an issue there.
As far as Green-ness, honestly, P85D with the current efficiency numbers does not look very green to me. If you are unaware, the EPA MPGe ratings are inflated to make numbers look better, as they only count kwh delivered from the outlet, but do not consider inefficiency at the power plant (which is likely only 50%). When you factor in the energy required to build these batteries and aluminum chassis, the car simply needs to have great efficiency to justify it's energy cost of production.
That said, I didn't order the car for green-ness as my primary reason -- I ordered it because of glowing recommendations from other owners who said their experience has been great (and mine hasn't been through the ordering process), and because of the claimed metrics (performance AND a reasonable range). Sure my Porsche may have low fuel efficiency, but it's got a reasonable size tank, and I can easily fill it up in under 5 minutes. Superchargers are great, but I shouldn't HAVE to use one for a 200 mile 70mph drive.
I know this sounds very negative, but I am still hopeful that Tesla will put out an appropriate update soon and make things right, and I am planning on accepting delivery on Friday -- but this has got to be one of the worst delivery experiences I've ever had on any car. From the looks of it, I won't even get a "Oh, sorry, we don't have the seats you ordered, and the range is 100 miles less than we originally said on the website when you ordered!" Instead, I will have to point out the lack of new seats, ask for them to put it in writing that they will fix it, and wait for an update on the range thing. I highly doubt my DS will even mention the range issue. When I mentioned the delays and the seat issues to my DS, he said something like "Oh, just because people post it on forums doesn't make it true!". I do not appreciate being treated like an idiot. I'm fairly sure TMC is not just a giant conspiracy to tarnish Tesla's great work.
Wk057 and others have gone on road trips immediately after delivery, and were blind-sighted by much longer charging times for the same distance covered.
I was originally planning on doing a Fremont delivery and driving cross country to Miami. Thank god I didn't do that.