Given the task definition and input, reply with output. In this task, you will be shown an incorrect English sentence. You need to generate a corrected form of the input sentence.

So because more people are able to buy cars the demand for cars will increase and so the production of cars will also increase and in the end this means that the number of cars will increase from now to twenty years time .
So because more people are able to buy cars , the demand for , and production of , cars will increase , and , in the end , this means that the number of cars will increase in twenty years ' time .