All of the Plymouth Prowlers were glued and riveted together; 19 years ago. I know of many that have exceeded 100k miles without issues related to construction. Very little steel in a Prowler, none on the body or frame. So it’s not really a new concept, just coming out on a larger scale. Honestly I don;t get it on a truck. If you carry loads the weight savings means nothing anyhow. And aluminum still corrodes so that should be interesting in the snow belt.