There is one detail about the wurms that caught my attention: The "badlands" are a hazardous area with poisonous sulfur pits. Walking on the ground means quick death. To travel through the badlands you will ride inside (yes, that's what it says!) huge wurms with 3000 HP. This is to protect you from the hazardous environment. Huh, can it be any more hazardous than the inside of a wurm? Not exactly cosy, isn't it? Can I book "first class" to redeem some mileage? You know, first class passengers always sit in the front, near the cockpit, so you may be able to see some impressive jaws, whereas economy passengers sit near the rear end, where it smells like wurm doodoo.

There goes the dream of those who envisioned "mounting" a wurm Paul Atreides style.