a skilled factory worker carefully installs an engine into a partially assembled car chassis on the assembly line. Another worker nearby attaches wheels to the vehicle frame with precision tools. The completed engine fits perfectly into place as the car takes shape around it. The assembly line moves the vehicle forward to the next station where more components will be added. Other workers in the background operate machinery and carry automotive parts like bumpers and headlights. Additional partially built cars move along the conveyor system in various stages of completion. the motor vehicle industry and everything relating to automobile manufacturing