Here is the latest competition for the Mono-Tracer, the C-1. Its claim-to-fame is that it is stabilized by gyros. Plus, at a price of 15,000 Pounds, seems really (too) cheap. I wouldn't put too much money on this thing being financially successful though (in my opinion), but here it is and it does look nice:
http://www.dailymail.co.uk/sciencetech/article-2105868/C-1-The-electric-motorbike-creature-comforts-car.htmlI might add that BMW may not be happy about this name, as they used to build a partially-enclosed IC scooter called the C-1 (which never sold well) and they also built a single EV prototype using their C-1 chassis and the Vectrix power train a few years ago. Their lawyers may come a-knocking one day.