Trucks, buses, cars, motor cycles, scooters, etc. come under which of the following industry?

Automobiles provides these vehicles for quick transport of good services and passengers. The industry is located around Delhi, Gurugram, Mumbai, Pune, Chennai, Kolkata, Lucknow, Indore, Hyderabad, Jamshedpur and Bengaluru. The Indian auto industry became the 4th largest in the world.