This week's headlines included everything from the Tesla Model X to the 2014 Nissan Leaf electric car. Here's a look at what happened in the green-car universe:

We took a look at some upcoming vehicle debuts at next week's 2014 Detroit Auto Show, and also laid some electric-car trivia upon you. This week we also discussed the pros and cons of General Motors purchasing Tesla Motors, not that it's doing so.

This interesting BulletTruck gave us a glimpse into the possible future design of more aerodynamic semis, and Formula E electric racing showed up in Vegas for a demo run.

If you're waiting for the new 2014 Ford Fiesta with the 1.0-liter EcoBoost engine, it's now being delivered to dealerships. And if you are interested in the 2014 Jeep Grand Cherokee EcoDiesel, you'll definitely want to check out our fuel economy report.

In exciting surprises, someone spotted the 2015 Tesla Model X in prototype form out testing in southern California and posted it to Instagram.

The 2014 Nissan Leaf was in the headlines this week: the electric car receives a few tweaks for 2014, and we discussed the possibility that U.S. production coudl double.

If all of this is new to you, then you clearly aren't following us on social media. No worries: you can get up to speed by following us on Instagram, Facebook, Twitter, and, of course, YouTube.