I still don't see the appeal. What's fun about driving through mud?
its fun going through water deeper than your hood and getting through and saying "i just did that"
plus its sooper complicated
you got
diff locks
on-board air compressors to lower the tire pressure at will
over-axle leaf springs or under-axle leaf springs
coil-overs or separate spring and shock
independent or solid axle
lots of gears and gear reduction
multiple gear transfer-cases