Bill McKee wrote:

Prius on a good day makes 45 mpg. That is nice, but the only ones who are
beating the 45 mpg max are the "hot rodders" who are stuffing more batteries
in and adding the "plug in hybrid" capability. Long highway trip, you will
get about 30 on a hybrid. Very little braking, slowing down, etc that is
recovered as stored energy. The around town and short stop and go trips are
the most efficient use. The plug in modifiers get the advantage of the
extra battery capacity and plug in to the house charging. Up until a couple
of years ago, that voided the hybrids warrantee.

In my office of 12 there are 2 stock Honda Insights averaging 60+ mpg
year round over the last 4+ years.

-rick-