The cost of the Plug-in Escape conversion ( you provide the car ) at Hybrids-Plus is now $32,400. Down from $36,000 the past year.

I heard somewhere *(don't remember the source, sorry) that the first production model plug-in Prius will have 6 miles of all EV. The Prius has ( and presumably will have ) an EV only button, so you can leave your garage in EV and take the kids to school, or baseball, all in EV.

6 miles does not seem like a lot, but think of MOST trips people make. YMMV
With 6 miles, cost will be low, weight will be low, and time to recharge will be low.

Those people wishing for 50+ miles of EV range should go for an all electric car.
50 miles of battery starts to approach the weight of a combustion engine.
Thus, if you want that much ( or 100 miles ) remove the ICE all together, and go 100% electric.

To have the best of both worlds, you need two cars.
A short trip EV car, and a long trip ICE car.

I am begging Hybrids-Plus (since I live close to them) to make a Plug-in pack for my Insight. A 50-mile PHEV Insight might be possible for $15,000. Some of you may be thinking the Insight does not have EV mode. Well, there is a way to force it into EV mode once you are rolling. It has only a 13 HP (10kW) electric motor, but that is enough to keep you going in most cases. Once you are rolling, you can electronically cut the fuel injectors, and you can keep running with the electric motor only. 13 HP is plenty for an 1850 pound car! ( 2050 with this driver ) Hybrids-Plus is reluctant, since they do not think there is a market for this, since there are so few Insights out there.