The key is while moving it would act like a vehicle, but when deployed it would act like destructible terrain like a wall. while moving a hit kills crew boom, when deployed a section of wall crumbles and if someone is behind it like a wall they die, share any thoughts should it just be a vehicle or become an invulnerable part of the terrain ?
Wow, i cant believe this was actually built, and tested for 4 months, bizarre 
Cant see how it a engineer thing,
but i can see image 2-3-4 being used for a engineer’s transport squad, 
It looks like an AT-AT, but from the 1940s.
and here I thought tank turrets were claustrophobic hehe that drawing doesn’t even appear to account for any ventilation or ingress/egress out of that contraption. Hopefully they addressed some of those human factors in the mock up/prototype if this was actually a thing. I’ve never actually seen this before.