Its completely possible, and not even under horribly specific scenarios. The new Mirage will have the best mileage rating of any non-hybrid out there. One of the members of EM actually had one for testing a while back and was able to do some speed vs mileage testing for us. At 50 mph you are almost eeking out 60 mpg.
Speed vs. mileage/fuel economy chart - Mirage 1.2L 5-spd
