[Baltothewolf]

With that kind of a commute, a G1 insight sounds perfect for you. Even driving it with no care to mpg, as long as you have the appropriate tires/other underbelly panels I'm sure you would get 55+mpg. You can get a decent one with little or no problems for 3k, and a perfect one for 4k. They are dirt cheap right now due to gas prices.

[Edit]: I have been driving my insight with little to no care to MPG, at 70-75mph on the freeway and 3k RPM shifts in the city, and I am at 64.6 this tank. I don't have any under engine panels or front wheel strakes. I'm fairly sure I would be at or above 70 if I had those.

If you went from 22 mpg in your truck, to 60 in the insight, over 15000 miles, you would save 1,000$ in gas. BUT there is more. Do the spark plugs to the truck last 105,000 miles? Do the distributor/wires last forever? I have yet to see an insight that was taken care of have failed coils, and the spark plugs, EGR plate and valve adjustment only needs to be done once every 105,000 miles. Also, how much is a set of tires for your truck? A set of Re92's (don't you dare get anything else on the insight, instant 5-10mpg drop) are about 400$ installed, although if you grab them while on sale, they can be had for as little as 65$ a tire.

However, the insight does have a down side, a replacement IMA battery costs 1800$. If you properly take care of it (via grid charger) they will easily last 10 years, but the gas savings alone in 10 years will pay for it 5x over.