I have seen this in Lahore too.
Once upon a time I have seen this on BBC. In India they called it "JUGAR" meaning "An Easy Way Out" and It had a water powered engine and was used in villages. The engine looked more like a Donkey Pump or something.
Keeping my fingers crossed if this truck also has the same engine setups. Also seen a Huge rickshaw type thing on my way from Lahore to Gujranwala somewhere close to Muridke with similar engine setups and bigger than a cars tyres and was used like a CHAND GARI for public transport on GT road.