There's even a rear steering cargo trike company in Denmark. It's weird but I had an explanation that it was meant for low speed and maneuverability with cargo rather than as an exercise machine or high speed transportation.

I've ridden a few trikes like you'd use for a small food stand and they aren't so bad to drive around. Would I take one mountain biking or on a hill climb? No, but that's beside the point. I also don't use my phone for all my CAD work.