How the differential works? Actually many of you does not care what a differential is or they don't want to learn how it works :) That's the thing which helps to move tyres which are transferring power to move freely :) Unless, we cannot even park our cars ;)
But you should watch the movie produced in 1937 to educate people about how a differential works. However, movie has more interesting story than the differential ;) By General Motors
By the way, this is the best video to understand this how this complicated machine is working!