[MENTION=66389]BlackWorksInc[/MENTION] I have to disagree with you a bit here. You go offroad right? What if I told you I could give you enough electricity to run your portable refrigerator and lights for a few day's camping? And what if I told you that you wasted that amount of energy while driving to the campsite and I am just going to capture that and give it back to you? How? Braking and spring energy. You waste a lot of energy braking (lost to heat) and every time you go over a bump your spring compresses and rebounds (gravity) and controlling that (shocks) could produce energy. When you get to yor campsite you don't have to worry about dual batteries or a generator because you captured all the energy you need on the 100 mile drive there. Interested now?
THESE are the type of ideas that I have for the future. More later.
I'm aware of those technologies and actually and very excited about them! I would love to see energy absorbing shock/spring technology start becoming mainstream, it will be interesting to see how well the technology will stand up to abuse/age; but initial testing just shows an amazing amount of energy to be tapped into (also why I love the idea of piezoelectric sheets under roadways!

) But my gripe is with reliability and durability, particularly in off-road situations (where most of this technology will probably not get into for a decade or so after its adoption into the mainstream vehicle world... so most likely no energy absorbing lift kits for a while

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Tesla's a nice company, but they are replacing A LOT of batteries in their vehicles (as is Toyota in their Tesla derived, now defunct Rav4 EV program.) Tesla is on the bleeding edge of EV technology and the reliability and durability is already showing its growing pains. Combined with the infrastructure problem, I'm just don't see that technology being reliable enough in a decade or so to trust solely as propulsion for an off-road/towing vehicle.
As for Hybrid vehicles (setting the environmental lie part aside), I have even more concerns; I see a lot of issues with the hybrids and they way their designed just makes me squeamish at the thought of implementing it in a vehicle that some people want to take hundreds of miles from the nearest repair facility let alone where most tow trucks will never venture. Not to mention the idea of a CVT and/or motor generators worries me, at least the axle housings are steel and the differentials are fairly beefy; not so much on hybrids. There's benefits to the idea of running hybrid. But between battery issues, inverters, very limited servicability, and extremely dangerous components to deal with; they are not something I would want to see on a vehicle many people will rely on to get OUT of the woods alive.
One can't turn the tide of technology, but the reality is the more technology we're shoving in these vehicles the more failures we're seeing (wouldn't be surprised if much of the computer issues are tin whisker related... I'm not even going to open that bag of horrors right now.) In 15 years or so we're talking about a theoretical vehicle that will be highly computerized, very electrical, and probably have little mechanical components to work with; that is an extremely frightening idea based on just how much electrical issues modern vehicles have and how easily modern vehicles become glorified bricks at the very least due to these issues.
Charging the fridge and campsite is all fine and good, until Motor/Generator 1 fries out and takes out the communication bus which results in your vehicle dying completely with no power supply to tap into due to safeties/redundancies and you're 200 miles out in the middle of no where with no cell reception and no way to communicate and/or limp home. I'm all for new technology, but most of this very nice, highly complicated cutting edge stuff is best left on the road where its easy to tow your now "bricked" vehicle to the local shop and/or junkyard since they'll probably end up being disposable. But in 10-20 years I think we'll barely be working out the kinks with how our world is quick to adopt fancy new technology, but slower than tar to realize and respond to issues that arise from pushing technology too fast without proper testing/research.