I just returned from a two week, 2700 mile road trip from Texas to Michigan and return. I just purchased a cargo box thought I'd post results.
We bought the Sears X-Cargo Sport 20 which has all kinds of room (20 cubic feet if I remember). It held all of our baby's stuff (stroller, exersaucer, jumper, etc). We also have the OEM roof rack and 4WD.
On our trip we averaged around 19.5 miles to the gallon on the highway doing between 70 and 75. I didn't keep as good of track in the city since I figured it wouldn't have as big an effect. It was an uncomfortable ride on the highways with crosswinds. The extra surface area on the top really exaggerated the wind.
Overall I was impressed. I would like to get a little better gas mileage, but not much can be done. The best part was we only scraped it once on a low sign.
We bought the Sears X-Cargo Sport 20 which has all kinds of room (20 cubic feet if I remember). It held all of our baby's stuff (stroller, exersaucer, jumper, etc). We also have the OEM roof rack and 4WD.
On our trip we averaged around 19.5 miles to the gallon on the highway doing between 70 and 75. I didn't keep as good of track in the city since I figured it wouldn't have as big an effect. It was an uncomfortable ride on the highways with crosswinds. The extra surface area on the top really exaggerated the wind.
Overall I was impressed. I would like to get a little better gas mileage, but not much can be done. The best part was we only scraped it once on a low sign.