Now that my car has been upgraded to a PHEV, the difference is amazing. I think the following picture says it all:
That is right, I filled up the gas in the morning before the upgrade, and using battery power to get back to my house (mostly highway driving), so far I am getting 77.9 miles per gallon! The gas engine engaged during highway speeds and accelerations, obviously, but for a while, I was getting more than 100 mpg.
Of course, the operation is not for the faint of heart, as the following photos show:
Here are some more photos of the day:
But at the end, everything looked and worked great!
Many thanks to Dan Rodkey and especially Rob Gorman of Fitzgerald Toyota in Gaithersburg MD for doing such a great job!