Hit by a demand slump, Toyota Kirloskar Motor has stopped production of all its petrol cars, while others like Fiat are considering shutting down plants for a few days next month.While Tata Motors will stop production of commercial vehicles at Pune for three days this week, Maruti Suzuki India will be having its week-long annual maintenance shut down from next week."We are having some amount of inventory for our petrol cars and it ha...