Operating on the Mumbai-Nashik route, this taxi doubles up as a makeshift bedroom for overnight stays away from home. The open hatch and windows provide fresh air and the custom built nets keep the mosquitoes away.
The law aims to reduce emissions by preventing truck drivers from leaving their engines running when parked at rest areas. The truck drivers on the other hand prefer to keep the engine idling to maintain comfortable cabin temperatures (heating/air conditioning).
Still, I find it quite strange that a law is needed to prevent engine idling.