i had one of these for a bit, drove like a roller skate, had a little lever near the handbrake that you lifted to start it - mine was rust held together with tape and dirt and cost me £14 off a mate (that was the change in my coat pocket)
We had one of these brand new in 1975, known as a lorry driver's ashtray as it had a sunroof. We had the rust hole in sill repaired under warrenty as it was only six months old at the time! [:0]
I remember that lift up lever for the starter and another for the choke. It always felt like someone was chasing you with a lawnmower!