With my nearly four year old Prius, I am happy with the 40+ MPG it gets, with the after market tires/wheels on it. Heck, I'm happy with the 25+ MPG my Hybrid Highlander gets. Any saving is worth it to me.
I've seen 61 mpg on my car a couple of times already. I am really excited that I am constantly getting 54 to 55 mpg every trip with my AC on set at 70°F.
Same here. I can't seem to get it that high no matter how I try. I am currently on my 3rd tank with the car and it is at 48.1, which is great, but I'd love to hit it over that 50!