An easy, step-by-step tutorial on how to add a USB power outlet was first pointed out here on PriusChat back in December 2009 and this week it has been making the blog rounds, so I thought I would take a moment to post the article from Instructables here on the front page of PriusChat.

It's getting to that time of year when it's chilly when you leave for that morning commute.  You've probably started to notice that your Prius gets notably worse gas mileage on these cold mornings, and the PriusChat Shop has the way to remedy it.  An Engine Block Heater is an easy to install add-on to your car that allows you to "pre-heat" your Prius' engine, enabling you to start out with fantastic mileage even on the coldest of days.