If you pause the video @9s in, you'll see a footnote, that says this car is only valid for the Indian market. It also says that this model is made in India (the law in India makes importing cars super-expensive, so any car maker that wants to sell there has to put a factory there). Renault has much higher EU safety regulations for the cars that it builds in France and Romania.
There are some cars sold in India (Tata Nano for example) where the seatbelts are even optional.
I think the reasoning is that it's marginally safer than transporting your family on a motorcycle, which is common.
Also, random cattle crossing the street have the right-of-way, even on highways.

Gas is $3/gallon now. Wait a couple of years for oil to go back to $150/barrel, and for India to get the Tata Nano in decent numbers, and then check that calculation again

Besides, every prototype costs a lot. It's the process of mass-production of a car that reduces it's price significantly.

*eco