This article is from the Motorsport FAQ, by A H Henry bspahh@midge.bath.ac.uk with numerous contributions by others.
Nick Goosey, manager of the Penske factory in the UK, is a strong
believer in getting all their new staff to spend a year sweeping the
factory floor, making tea and cleaning the cars. This might not sound
very appealing, but it seems to work for Penske. Although, racing
cars look simple when they are working properly, there is a lot to go
wrong if they are not. If you are planning to run your own car,
experience helping out with other people's cars could save you a
considerable amount of time and money.
 
Continue to: