That looks VERY sturdy! - If I was going to spend $4K on a bike in NYC, it would have to be very sturdy - Sturdy enough to carry a 200 pound chain and a 25 pound padlock everywhere I went! My number one criteria would be . . . . something cheap enough that I wouldn't cry when it went missingif i had a $4000 limit for a NYC commuter this is the bike i would get! it has all the things you need for NYC. with E-Bikes my rule is find a bike that delivers what i need and then some! i know what riding in NYC is like and you need to be prepared! I would go with a Biktrix Juggernaut Duo, you can choose your own motor(hub/BBS02/M620Ultra and battery size single or dual battery!