 Plug-In Hybrid is the BEST Design.  With the 25-30 mile Battery capacity, the 2017 Prius Prime is perfect for my 15 mile drive to work, where I can also plug-in.  I only use Gas when I drive the 20 miles to the City, don't plug-in and run out of Battery on the trip home.  Then the efficiency of the Prius ICE allows it to get 55-60 mpg.