Time to accomplish a task

[Engguy]

When reading some of the many automotive forums on the net, its always a laugh when someone brags about how fast they can do a certain job, or how fast a line mechanic is at doing something like R and R ing a head or what ever. I can imagine what kind of job they do. Doing any sort of mechanics job fast is just not synonymous with doing a good thorough job.
120 working hours to assembe an F1 engine should explain it all.
http://www.formula1.com/news/features/2009/2/8949.html