I've been watching this closely and doing some calculations so I wanted to share this on the Pacifica Hybrid Forum.
Gasoline in my part of Canada is 123.9 a liter (US $3.60 a gallon) and electricity is 9 cents per kW-h. 80 MPGe equates to 26.2 kWh per 100km. I would expect in gas hybrid mode once the battery depletes to 40%, the Chrysler Pacifica will use 25 MPG city and highway which is 9.3 L/100km. At 20000 km a year with 60% of my usage in electric mode and 40% of my usage in gas mode, that's $253 in electricity and $922 in fuel. That's 6 cents a km or just under 10 cents a mile. Over 160,000km, that's $9,600.
Now of course, if driving was only short trips and it could be done on electricity, then the cost savings go up even more. 160,000km on electric only power the cost would only be 2.4 cents per km, for a total cost of $3840!