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We are living in a golden age of electric cargo bikes
(www.theverge.com)
I've had my eye on these for a while. They seem great in non-winter conditions. The only weakness I see is wintertime use. I live in a northern climate with long and sometimes quite harsh winter season.
The Fins bike throughout winter. The Dutch and apparently also Germans have a saying, "you're not made of sugar." There's a Scandinavian saying, "there's no such thing as bad weather, only bad clothes." Unless you're farther inside the Arctic circle than Finland, you probably just need to get better cold weather gear.
But even if you only used it in the summer, you'd still be making the world a better place by taking one car off the road even for a single season.
Technology for a Solar-Punk future.
Airships and hydroponic farms...