I've had a cargo bike at home for 8 years and I've resisted the electric assist trend because I really like simplicity and also because I don't ride it very much at all in 2019. I'm very happy I did not choose an electric get-up back in 2011 because by now it would be so outdated I'd have to upgrade two or three more times to keep up with the technology if I was the kind of person that felt like they needed to keep up with trends and technology. My plan is to keep on keeping it simple going with the go slow grocery getter powered by a 1 x 8 drivetrain with pedals pushed by my feet.
the future on the work cargo bike front looks like a GMAC rear hub motor from GRIN. I can tell you more about it when I know more about it. But I can tell you that the electric assist is an essential part of the job as a nonessential government worker