[Suhiir]

Well . . .
They can clear a 3 foot obstacle.
Are basically worthless in forest, can't fit between the trees, no actual ground contact to give them the ability to push over a tree bigger then say 2-3 inches.
Swamps, water, snow, sand desert, parking lots, basically anything pretty much flat is all the same as far as they're concerned.
At slow speeds (10 mph or less) they maneuver fairly well but the faster they travel the worse their ability to maneuver.

I still don't claim to be an expert but I hope that helps.
If you have some specific question(s) I'll do my best to answer or give you an honest "I haven't a clue" for an answer.