For $15k, Voltify Your EV With A Range-Extending Trailer

Edward Niedermeyer
by Edward Niedermeyer

OK, so the EMAV PRU (Electric Motors and Vehicle Company Power Regeneration Unit) isn’t expected to go on sale until sometime next year, but it’s one curious approach to the “range anxiety” problem that caused GM to develop the Volt as a range-extended EV rather than a pure battery-only EV. The PRU takes a simple concept, a trailer that can both store goods and generate 25kWh of electricity from a 750cc diesel engine in order to extend range, and makes it considerably more complicated than it needs to be. For one thing, it’s self-propelled, necessitating on-board lithium-ion batteries, as well as an electric drive unit.

As a result, the projected pricetag comes to a prohibitive $15,000, and the weight reaches an EV range-sapping 1,220 lbs. And for all that, wouldn’t a $15k hatchback make a better “range extender” than this cumbersome trailer? On the other hand, a trailer like this just might work as a rental item, offering a portable generator as well as range extension that its makers say will work with any electric car. But would something like this be more appealing as a simplified, lighter unit (non-self-propelled), or will add-on range extension always struggle to offer more for money than having a gas car as a compliment to an electric car? Given that American families typically have several cars anyway, the answer would appear to be yes… [via GM-volt.com]


Edward Niedermeyer
Edward Niedermeyer

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  • DenverMike DenverMike on Nov 03, 2010

    I know grown men that can't back up a trailer. It's harder than it looks. Now picture teen drivers and the elderly...

  • Turkey100 Turkey100 on Aug 21, 2011

    I have a 1963 catalina with a 421s and a 2bbl carb anyone ever seen one??? I can not find one anywhere on the web sany help would be apprecitated I can be reached at turkey100@aol.com

  • Lorenzo Are they calling it a K4? That's a mountain in the Himalayas! Stick with names!
  • MaintenanceCosts It's going to have to go downmarket a bit not to step on the Land Cruiser's toes.
  • Lorenzo Since EVs don't come in for oil changes, their owners don't have their tires rotated regularly, something the dealers would have done. That's the biggest reason they need to buy a new set of tires sooner, not that EVs wear out tires appreciably faster.
  • THX1136 Always liked the Mustang though I've never owned one. I remember my 13 yo self grabbing some Ford literature that Oct which included the brochure for the Mustang. Using my youthful imagination I traced the 'centerfold' photo of the car AND extending the roof line back to turn it into a small wagon version. At the time I thought it would be a cool variant to offer. What was I thinking?!
  • GregLocock That's a bodge, not a solution. Your diff now has bits of broken off metal floating around in it.
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