What's the cheapest way to rent a vehicle and drive from Lake Charles, LA to Oakland, CA?o?

Renting a car is easy (with DL and credit card). I would rent for a week and use my own insurance. Shop around, rental rates vary widely, especially toward nicer models. The rental agency (I believe Enterprise has a special weekly rate right now) can provide an alternative but expensive insurance option if necessary.

You might also share with someone, splitting driving, expenses, etc. Remember everything you know about strangers however, cooped up in a car will reveal everything you don't like about them. It may save a great deal of time and stress and be the most fun too.

Another idea if time permits and you are strapped for cash is to locate a local auto transport agent. In this you are paid a stipend and you drive someone else's car to be delivered near your destination.