There's an old eccentric guy who lives in my area whos got a bike like this.
This summer gone, i got chatting to him about his bike. The bike looked like an old 60s/70s racer and was well worn. The rear was covered with about half a dozen lights and the bars looked like a vespa with multiple mirrors strapped to it.
As i said he was a very eccentric guy but was very interesting to talk to.
Obviously a motorised bike is illegal to use around town, and he said he just used it as an ordinary pedal cycle to get around, but as he lived up in the Welsh mountains and age was against him, when he got out into the "sticks" where no one was about he would use the engine to get up the long climbs.