Replying to Anyone lived out of a car?

I got a job in Nevada for a core drilling company, where I'll work 20 days on and 10 days off a month. The company is paying an extra $700 a week to cover a hotel, food, and other expenses. I was thinking we have an old Chevy Suburban that isn't a daily driver for anyone in my family, maybe I could take the back seats out, throw a mattress in there and pocket the money I would be spending on a hotel, maybe to take it up to Hood even.

Thoughts? Anyone done something similar? The most obvious problem I see is no running water/bathroom, and I might have to pay for a camping site or something?