[FiShNc]

I'll be moving across the country soon here and I have basically three options

1. 16ft gasoline truck est. 12mpg w/ 35 gal tank
2. 22ft diesel truck est. 10mpg w/ 50 gal tank
3. Trailer on a sedan that, even without a trailer, struggles to get 30mpg highway

The diesel is about 1.5ft higher than the gas truck.

I have driven a gasoline moving van about 700 miles before. It took something like 16 hours because I could rarely break 60mph, and every time I lost speed on hills or from being cut off, it took quite a while to recover. I wonder if the diesel truck can perform better when loaded and suffer less of an mpg penalty than the loaded gas truck.

I have no idea what kind of mpg penalty or top speed penalty the sedan will suffer with a trailer.

So my question is, what do you guys think is the most economical way to haul a 2 bedroom house of stuff 2500 miles? Keep in mind, driving slower means more hotels, and a bigger tank means fewer stops. Does anyone have any idea what kind of average speed I can expect to achieve?