I was taking a Python Datascience course on Edx, when in one of the video tutorials I saw this:

I was stunned. Why? Because you see a car in there? It was created by me. You can find it in Openclipart here https://openclipart.org/detail/173850/race-car

It was very pleasing to see my work been used in one of the course I am taking. This is how freedom progresses, you do a work and give it away for free, then some one uses it as a building block in his or her work and uses it for something and give it off for free.

The course I am taking comes in two version, one is free and another costs $350. Unfortunately my image is available in paid version too and not even a dollar will be given me out of the $350 charged.

Well thats how the world works.