Hey! What's wrong with 42 MPG?
I would get a Prius in a flash. It's definitely my next car.
As mentioned previously, the Honda Insight is a s m a l l 2-seater, which explains the 60MPG. I've also heard that the Honda Civic hybrid doesn't get as good mileage as the Prius. It uses different technology which is not as efficient in the city.
On top of everything else, I believe that there are tax breaks for hybrids, too.