Tonight we rode to a restaurant on our electric cargo bike that we never made it to in over two years of owning the box bike.
In just our first few days of owning and riding our Yuba Mundo, it is already replacing trips that we used to take to by car, despite having other bikes to ride. My wife has quickly adopted it as "her new bike".
Two things make a big difference: first, even with the extra weight of the electrical system ( 20 pounds? ), the bike is still lighter and faster than the box bike, even while the assist is turned off. Second-- and this is the clincher-- the electric assist makes a big difference, both mentally and actually.
Tonight my wife mostly pedaled unassisted for the exercise, and used the electric assist to soften some less pleasant spots of the trip: helping to climb some hills, and accelerating quickly to get through spots with heavy traffic.
For myself, I found that I needed to quickly check-in on a project at church multiple times during the week, requiring a 6 mile round trip for a short visit. With electric assist heavily engaged, I was able to average nearly 18 mph for the trip while carrying a child, allowing me to travel each way in under 15 minutes. I didn't have time in my schedule for a trip that took twice as long, so I would have needed to take the car myself, or skipped the trip.