I have a metal lathe in my shop, if I thought it was worth it I could turn it into a factory in 10 minutes - including the time to change my clothes. I could a factory to build simple toolboxes in about a month - not much space or equipment needed. Building a car assembly line - one month if you will accept a production rate of 1 every year. Want to turn out a new car every minute and it will take a lot longer.
I have a metal lathe in my shop, if I thought it was worth it I could turn it into a factory in 10 minutes - including the time to change my clothes. I could a factory to build simple toolboxes in about a month - not much space or equipment needed. Building a car assembly line - one month if you will accept a production rate of 1 every year. Want to turn out a new car every minute and it will take a lot longer.