I would not be so sure re the Twizzy being a better performer, it slower, shorter range, going off the design, height and video of a Twizzy rolling over at low speed I think that Trev may well have significantly better handling and Trev also carries 2 people.The usual disadvantages with three wheelers, unstable and less comfortable than four wheels. The Renault Twizy is more practical and a better performere, and can also carry two for short trips.