The "Water Fueled Car"

[roguebanshee]

(14 miles each way, wasting less gas than those who use a 30 mpg car to commute 50 miles, not that unusual in the Seattle area).

And you would have wasted even less if you had gotten a proper car instead. For the other cases (moving large amounts of stuff) you could have rented a car or trailer for the occasion.

And 30 mpg? That's horrible fuel economy, something I'd expect from a badly maintained mid-90's car. Anything from this century should go at least 40 mpg, unless the driver doesn't know what (s)he is doing.