You can now:
http://www.toyota.com/prius-plug-in/
As I recall, a little over 700 miles was about what I could squeeze out of my CRX 1.3. And with good tires on it, it was truly a fun car to drive. With 2012 engine technology in it, it’d probably be a killer.
Good review here:
http://www.automobilemag.com/green/reviews/0907_1985_honda_crx_hf_2010_honda_insight/
I did not know about the plug-in Prius