Wow, you are right, according to Doug, they scrapped it for the Production models. I studied it thoroughly on the demos, it was a nice setup, and it's definitely not for the reasons Doug is claiming; Weight/Complexity? Weight is total B/S, it's just basically an aluminum reversing valve with a small solenoid. Complexity might be a partial truth; the real reason is probably to save a few $.cwerdna wrote:Ingineer wrote:The biggest disappointment is the lack of a heat-pump system. This would have enabled heating at a much lower energy cost, all for the addition of an $18 reversing valve (my cost at the local refrigeration supply house) and some software. Toyota has done it on the plug-in-Prius!
Regarding the PiP, you sure about that on the production model? See http://priuschat.com/forums/prius-hybri ... ost1389049.
After all, in a car that will probably only drive 15-20 minutes on Electric, the cabin pre-heat is enough to keep it warm until the ICE kicks in. But in a BEV like the Leaf, it would be a great benefit!