I don't know how many miles you drove this last year to spend 1K in gas, but you do. So how much would you have saved in gas money if you'd had "gas sipper X"? Just in gas alone, forget purchase price of this car for now.
Well, you can see where I'm going. If you want to keep the truck, pick up a cheap motorcycle or scooter for $500 to $800 - you'll be getting 40 mpg at worst and can ride it to save gas any time you need to - and still have the truck.