The best-selling Toyota Prius has a lot going for it. It's comfortable, friendly-looking, eco-friendly, offers envious fuel economy, handles well... You catch our drift. But, as much as Bernardi Toyota loves it, we can admit... it didn't exactly scream performance. Didn't being the operative word.

Toyota is now enhancing the performance of the 2011 Prius by adding an available PLUS Performance package, featuring components from Toyota Racing Development's new PLUS hybrid…