Frankly, the only thing I would think would be lacking would be closet space. I would imagine they have some sort of laundry and/or dry cleaning facilities onsite, so if there are lockers available big enough to hold, say, 5 suits and another foot or two of hanger rod, plus 7 pairs of socks and undies, all you really need from the vehicle is a weatherproof sleeping space. A truck with a rigid tonneau cover and a futon mattress would work great. A van or camper would give you some private sitting space, though. A proper camper could even be enough to bring a date "home" to, or for a young couple with no plans to have kids right away. Dropping $500-1500/mo into a savings account instead of an efficiency apartment and bills would get the house fund going quick, especially if you're just planning to work there for a couple years and then move to a lower cost-of-living area. Say, 3 years at $1500/mo, then move to an area like here, where that $54,000 would buy a 20-year-old-but-well-maintained 3/2 outright.
Of course, then you have the other savings; dish detergent, toilet paper, soap, cable and anything else they take care of for you. No furniture needed. No artwork. No burning gas for a commute. Even if you weren't one of the higher-paid folks, $3-4000 a month in savings shouldn't be that hard. In three years, you'd have well over $100k in the bank to go make a few good income-generating investments and start planning an early retirement as you continue the low-cost, solid income route until your investments produce a livable salary.
Or you can do like most people do when they have savings like that; spend it on hookers and blow, (bar beer and truck chrome around here) and end up on welfare after the next layoff.
Only real annoyance I can see would be doing the "camp shuffle" first thing every morning to get from the car to the shower. Easily worth it for the potential benefits.
