When I lived in NYC, I had a single-speed Brompton. That thing was great. With a few basic modifications, it weighed right around 20lbs. Great riding bike that I even rode a hilly century (100 mile ride) with. You are never going to ride 100 miles on an electric bike (or you will really hate your life after the battery runs out). One distinct advantage of the Brompton compared to other folding bikes is how quick it folds- I had it down to around 10 seconds.