, and a Bluetooth OBDII dongle
Holy cow, I finally went down that rabbit hole.
A good overview on Torque can be found in this video [link
] and a follow up in this video [another link
MyGreenVolt is similar, but with fields specific to Volt and EV performance.
As a scientific geek I've been having an absolute ball taking the whole system from car to car and watching how things run.
As for the Volt, it's really astounding (and somewhat intimidating) to realize just how much the car is doing ALL THE TIME.
Edit: and the "Track Recorder" plug in is especially cool! [shown at 7:00 in video one above]