I live near Boulder, and in a few days, I'm going to test drive one with the lithium plug-in battery pack. I will report back on my impressions. The lithium battery pack fits in the same form as the stock battery. The stock battery is totally removed, so it is an "invisible" conversion. Same shape, but adds about 100 pounds vs. the original, but will have 15x to 20x the output.

I just talked to them last week. The vehicle to grid part is still on the drawing board... not available to purchase yet. Also talking at length with them, it is not their #1 goal to make this an EV car. It is their hope to boost your MPG to 50-75 MPG no matter how fast you drive, by having the battery and motor contribute power for all your miles, not just the EV miles.