That could be the best video on youtube for all the wrong reasons.

That's a low-end novelty bike. It's not going to be very strong at all. Most of these bikes use very cheap & flimsy rimsets. My buddy has a Montague folding MTB that he rides carefully in the street & light trail use. It's a hardtail. Pretty cheesy piece of work. Spend the same amount of money for a used quality hardtail bike.