Zeeshan locks his supermarket trolley to a tree like others would lock their bicycles: it is a crucial tool for him and other immigrants who comb Athens streets for scrap metal they can sell.
The strange contraptions appeared in the Greek capital about a year ago, and are now seen everywhere, from the city centre to far-flung suburbs as their conductors weave in and out of traffic.
It takes considerable skill to manoeuvre a supermarket caddy that is overflowing with tin cans, electronic appliances, bed-springs, oil cans, stoves, cables and radiators.
After a day going through rubbish bins, the balance becomes precarious while potholes or curbs pose hidden obstacles in an urban quest that evokes images from the post-apocalyptic road movie "Mad Max".
Tens of kilometers (miles) later, the moment of truth arrives, at a weigh station. Scrap metal dealers in the southern neighbourhood of Tavros are used to seeing exhausted collectors, many from Bangladesh, arrive.