I was once an ice cream vendor on one of these!
Not identical, it had pneumatic tyres but broadly very similar. I had this job when I was in school during holidays once. In the morning we loaded up with dry ice and ice cream popsicles and pedalled around the neighbourhoods. It must have been like pedalling a beached whale, but I don't remember working very hard. Never got a flat.
We used to ride around on 2 wheels a-la stuntman-driver style.
Once when coming down the road at full speed ringing the bell, I misjudged the distance to the kerb and the front wheel rode up the kerb, nicely upending me in the road. The lid came off and ice cream popsicles skittered everywhere!
Ahh, those were the days... the memory brings a smile