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GM Ultium tech can scavenge heat from everywhere, even you

GM likes to give us tidbits about its Ultium platform from time to time, and today it’s telling us about the platformÂ’s ability to capture waste heat from the propulsion system. In addition to capturing from the propulsion system, it can also capture humidity from both inside and outside the vehicle and even from passengersÂ’ body heat. Yes, you, your family and/or your friends are a usable heat source as far as GM EVs are concerned. It then deploys the heat in an advantageous way. If at this point, youÂ’re screaming, "Heat pump!" youÂ’d be right. WeÂ’re talking about an elaborate heat pump system that GM is using for its Ultium-based vehicles. Every Ultium-based GM vehicle gets this system that is covered by 11 patents and four publications. The waste heat it collects is used in a number of ways, but its primary use is to heat the cabin quickly and efficiently. GM claims it can heat the cabin of its Ultium-based vehicles quicker than vehicles with traditional internal combustion engines. Plus, when put to use, GM claims that using the heat pump provides its EVs with up to 10% more range than theyÂ’d have without. Beyond heating the cabin, the heat pump is capable of putting waste heat to use by preheating the battery prior to charging so that you can charge quicker. The system can even cool the propulsion system in preparation for Watts to Freedom (WTF) launch control starts. GM says this was vital in helping the Hummer EV achieve its bonkers 0-60 mph time of about 3 seconds. “Having a ground-up EV architecture gives us the freedom to build in standard features like UltiumÂ’s energy recovery capabilities,” said Doug Parks, GM executive VP of global product development, purchasing and supply chain. “This helps us squeeze more efficiency, performance and overall customer benefit out of our EVs.” GM says itÂ’s been developing heat pump technology since the EV1 and its heat pump. This is the modern evolution of that technology, and GM says itÂ’s going to be implemented in every Ultium-based vehicle as a standard feature. Related video: Green Cadillac Chevrolet GM GMC Technology Electric Future Vehicles

2014 Corvette Stingray meets Tesla Model S in drag strip showdown

They come from two different worlds and have little in common. The Tesla Model S P85 is the sportiest version of this paradigm-punching sedan from California, while the 2014 Corvette Stingray Z51 is a performance-enhanced version of Michigan's recently-updated sports car stalwart. The West Coast car seats five adults and eats electrons like Popeye eats spinach, the Easterner has two passenger places and, surprisingly, sips gasoline like one might bourbon. An attribute they do happen to share is extreme quickness. This similarity is all the excuse Drag Times needed to set the vehicles beside each other at the Palm Beach International Raceway for a bit of mano-a-mano quarter-mile combat. Fortunately enough, cameras were rolling for each of two bouts down the blacktop and the results recorded for our edification and enlightenment. The winner? We won't spoil it for you, but let's just say it's really, really close. How close? Scroll below and watch the video for yourself. Just be warned, the results may surprise you. This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.

Nissan Leaf sales drop, new Chevy Volt climbs in November

This is probably just how things are going to be from now on. With the second-gen Chevy Volt available in some states and Nissan dragging its heels on getting a true new version of the Leaf onto dealer lots, it's no surprise that plug-in vehicle shoppers are turning to the Volt in a big way. Yes, we know that a pure EV and a PHEV are not the same and that the Volt and the Leaf are quite different cars, but after all of this time tracking the two plug-in sales champions, we feel obliged to continue our monthly look at who's selling how many of what. Here goes. We'll start with the mediocre news. That'd be the Leaf sales, which came in at just 1,054 units last month. That's the lowest monthly sales total for all of 2015 and, in fact, the lowest month of Leaf sales since February 2013. It's also a 60.8 percent drop from November 2014's sales of 2,687. This despite the fact that you can now get a new Leaf with a longer range of 107 miles (vs. 84) for a higher cost. The new Volt (along with the first-gen Volts that are still being sold out there), on the other hand, was up 49 percent, to 1,980 sales. That gave the Volt its best November ever, "on both a total and retail basis," GM says. The Volt beat the Leaf in October, too, and we suspect this is going to be the story until Nissan figures out how to get people excited about a five-year-old model or introduces the second edition. As always, we'll have a fuller wrap-up of US green car sales in our By The Numbers report soon. Green Chevrolet Nissan Electric Hybrid ev sales