I have a 2000 Honda Insight. It is a great little car. I used to get 72MPG when I did a lot of freeway driving. I now get 63MPG because I rarely drive it outside the city. This car was quite expensive compared to a comparable econo-box, but I had more disposable income at the time and was thinking about peak oil. I will be happy to have this car as gas prices increase, although cost of repairs is excessive.
However, I also have a 1980 VW diesel Rabbit Pickup. It is also a great little car. It gets about 47MPG. It was cheap, including the cost of replacing the engine, the transmission, and many other parts. I plan to add a waste vegetable oil system to it this year. Despite the fact that the Honda is newer and gets better mileage, I plan to keep the VW as the car of last resort. It is more versatile, easy to understand and repair, parts are widely available, and I can stash bikes in the bed to use after I've spent my last dollar on fuel

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Hybrids have their place, but I look at them as disposable cars. The super high tech electronics, lightweight aluminum and plastic parts, reliance on expensive battery packs, and low production numbers mean these will probably not survive to second or third generation rebuilds. On the other hand, I'm guessing my diesel Rabbit will still be working in 2020 assuming I can get any fuel for it.
The energy cost of hybrids, compared to the relatively minor increase in fuel efficiency seen by most of them, probably means that running out to buy a hybrid rather than keeping your current car running only brings the world closer to peak. On the other hand, for individual preparation for peak oil, a hybrid looks like a pretty good investment if you don't have to go into debt to buy one.
Just be prepared for the shocking repair bills when anything breaks. It's like licking the terminals on the battery pack.