anyone read any interesting articles about tweaking your prius? Ya think its a good idea to do it?

 

I don't know if its a good idea to tweek your prius, but as I type this there are 4 guys driving a prius on city streets trying to get a 100mpg tank. At about the 1/2 way point in the tank they are around 105mpg.

 

As far as adding extra batteries, no, not a good idea. From a legal standpoint, there goes your warranty. From a practical standpoint, your fuel economy doesn't actually increase over long distances. Too much weight. A member here (krousdb?) has a car EMAXX, which he added an extra battery to. He eventually took it back off.