I'm probably revealing exactly which fab, but one issue the fab had is when it was built it was placed fairly close to the interstate. That did no matter when

I'm probably revealing exactly which fab, but one issue the fab had is when it was built it was placed fairly close to the interstate. That did no matter when they were at something like 500nm. However, as they slowly pulled the node size down they started noticing random errors within their chips. It took a while to track it down but it turns out semi trucks driving past the interstate were causing defects in the chips. They ended up installing shock absorbers everywhere to counteract this problem.