The speed of the line is important because it is directly tied to the output in the form of the "pipeline". The question then become how long is the pipeline?

The speed of the line is important because it is directly tied to the output in the form of the "pipeline". The question then become how long is the pipeline? 1day, 2days, 20 weeks? In which case you wait x-amount of time for the first car and then the rest is gravy.