How to get a car for free

I was thinking this morning about how to get a car for free , one idea was to buy the car then rent the car out to others until it is paid off then drive it till you get another car, so how would that work

1} You buy a used car for 10,000
2} Rent the car for 200.00 a week or 800 a month for 14 months =$11200.00
3} Now you have got your money back and drive the car happily until you decide to get another one

This is just one idea maybe you have some other ones so let me know what your ideas are