Just watch the Mow-verlanding episode of Dirt Every Day? Funny? Yes. Practical? Probably not.
I will say that in my high school and college years me and some friends would go "off-roading" on riding mowers. Remove the mower deck, weld the diff, put on some ATV tires, and a riding mower will go surprisingly far. Change the pulleys so you can go a little faster than 5 MPH. Real good fun, but I never camped off of it.