So people don't have to walk.
people build them
People build cars and that means jobs.
There are many cars on the roads right now because people invent and invent more cars and then they make them. In the past people didn't have the much material to build cars. Now people are equipped.
Automotive Engineers
The answer would be an 'auto mechanic'.
You build the road, I'll drive the car.
People build little cars that free wheel down hill and they race them.
He invented the model T and the assembly line.
by
They build cars.
build cars
Enigineer.