On kickstarter but by well known names, weight 33lb/15kg could mak a very nice e-cargo bike
https://www.kickstarter.com/projects/greengear/haul-a-day-the-strong-and-light-cargo-bike-built-f/description
https://www.kickstarter.com/projects/greengear/haul-a-day-the-strong-and-light-cargo-bike-built-f/description