Take your car, price it 1K less then any other, no matter if yours is the nicest, sell it because any rich person to show up with cash in hand can afford the gas for it, dont worry about market, your car is in a whole different market any way from normal people with kids, and bills, then take that cash and buy a fairly new car, with a used car warranty, and your set, pocketing what ever cash you may have left after buying the other car.
It can be done at dealers if you want, but your not going to get anywhere near what you can from a regular person, even when you price yours 1K lower, and your not going to get much in car value because your not getting much for your trade, and they are selling you a car at retail, where as you can get a hell of a deal off someone else in person. and dont think you cant find the car you want, there are always reasons for peoples madness, like why on earth you want a car with batteries that if break costs you 4-5x more then its regular car counterpart, but everyone does it for what ever their reasons so you can get what you want and sell yours, you just need to take the first steps and that being taking pictures and getting it up on the list for sale, and go from there.
You know the money you save in buying a hybrid doesnt equal out in what you pay for it, and car repairs when needed, when you just buy a regular car that gets 30+ mpg on its own without batteries or electric motors. In most cases its still cheaper in the end, and I sure as hell cannot recommend you buying a hybrid 2nd hand, thats just asking for trouble sooner then later, and you need to read the warranty, and or extended warranty very carefully to make sure you know what and what is not covered, because that can really take a bite out of your ass if things like electric motors or batteries are not covered. Get one dead cell and it can cost you thousands out of pocket because its not covered for its a part that wears out like brakes, and doesnt throw a rod like a gas motor would that would be considered mechanical defect.
You want to save a ton of money, buy 2 cars, something a nice old Focus, and a very used, easy to fix, Geo Metro, and stll pocket money, or buy a motorcycle with whats left.