it's got a bit of mini-pickup truck vibes
I can just envision someone riding in the front with an LMG in a mini-reverse-technical configuration 
https://envancorven.nl/
english: https://envancorven.nl/cargotrikes/
it's got a bit of mini-pickup truck vibes
I can just envision someone riding in the front with an LMG in a mini-reverse-technical configuration
https://envancorven.nl/
english: https://envancorven.nl/cargotrikes/
Looks heavy. Reminds me of an old Roman chariot, like this oughta be making loops around the Hippodrome with your LMG idea
My "standard" aluminum frame DIY e-MTB weighs like 70 lbs, this thing looks like it has a steel frame so I bet it's at least double that. I'd hate for the battery to run out of juice mid-ride, a 1% incline would feel like a mountain.
Still there is a rather large area for the battery to be in. In combination with some newer batteries, it could work
Is there a way to visually differentiate a steel or aluminum frame in a picture like this?
Fairly impossible for newer bikes, anything that looks like it came from the 80s is probably steel, even if it's recent
Yea, looks like they do only custom bikes for mostly heavy duty applications. One of them looks like it's made to transport sheets of glass for example, looks like a lot of their business is building custom bikes for craftspeople that need to transport more than a few groceries. They are definitely heavier than a normal cargo bike, but you'll probably not notice much of a difference thanks to the whole electric pedal support (as far as I know only speed is regulated, not torque or acceleration, so this thing will easily get to and cruise at about 25 km/h just like a lighter cargo bike will)