I decided to build myself a fat tire delta trike with a Bafang BBSO2 motor. Started it last fall and put a few hundred km's on before adding a coroplast body for wind and weather protection. So far it has exceeded my expectations. I live in the Canadian province of Manitoba and we definitely get all 4 seasons. Riding around inside it with an outside temp of 10 below Celcius all thats needed is a light jacket and gloves. I have 2 17.5AH lithium batteries and by keeping the power level and speed down it gets around 40 km's per battery.