Built in the early `60s with an automatic transmission. They weren`t a commercial success for Triumph who tried to cash in on the scooter boom of the time. It took a huge percentage of there R+D budget to develop, but never paid off. The bloke who owns the station where I take my bikes for their annual tests bought one quite recently to restore, it`s a beautifully simple machine about the size of a Vespa small frame. Maintenance however is a lot easier to carry out than on a Vespa, due to the sensible way in which the panels are easily removed. The bike was a bit of an innovation at the time having a CVT, unfortunately the 100cc engine was only capable of a top speed of 45 mph so a bit underpowered.