I cam across this review of fuel efficient cars available in the British market. None get less than 40 mpg combined city+ highway, and some are north of 60mpg. Also, none of them are useless hybrids either. Plus, they are not even the most efficient cars they can but there either, nor are the most efficient models expensive.
http://www.topgear.com/content/news/stories/2884/
http://www.topgear.com/content/news/stories/2884/