A 15-year-old from Sri Lanka has spent his Covid lockdown building a solar-powered tuk-tuk. The best part is that Suntharalingam Piranawan used scraps for his homemade vehicle - and it works.

There are over one million tuk-tuks (also known as auto rickshaws) in Sri Lanka. They are cheap to use but can also be very polluting. Now electric tuk-tuks are being developed as well as ...