http://ecomodder.com/forum/showthrea...snt-11623.html
The technology is out there and easy to implement, but it adds a few hundred dollars to the price of the car, and it's hard to explain the benefit of it to new car buyers. Some of them would actually be annoyed by the engine cutting out when they stop and lurching back to life when they lift off the brakes. So the cars would cost more, get the same EPA rating, and annoy a few customers. Where's the benefit to the automaker?