Chocolate Queen - care to expand on that brilliant note?
How did, you buffoon.
Surely you can work it out for yourself?
The use of mass production (division of labour and semi automisation) meant that Henry Ford was able to produce lots of cars at a cheap price.
He could then sell those cars at a cheap price to customers who in the past would not have been able to afford such things. Before WW1 it was only the very rich who could afford a motor car. Now it was possible for the middle and working classes to buy a car too (they might have had to save up like today but it wasnt out of the question anymore).
After WW1 people had been through a bad time and just wanted to have some 'fun' for a bit. There was an increased demand for things that could offer more leisure time such as the car (days out, easier shopping etc) and 'white goods' for the home that saved time.
Now that more people had a car more people could travel further and more easily. This meant that they were buying more and buying it from different areas because they could drive to shops out of town or in different towns.
People were not restricted to working where they lived because they could drive to work. This gave people more employment opportunities and a better chance at getting a higher paid job. A more mobile workforce was also better for employers because they could now open offices, factories etc in large out of town areas and expand their companies (which is what Ford himself did at River Rouge, Detroit)
Because people were buying more things there was a bigger demand for manufacturing. Factories therefore increased their production, employed more people and paid them more. Because the people were paid more they could afford to buy even more!
This caused a boom in the economy.