You drove into traffic to keep me from that laundry.
In Crawl Space, Hank unexpectedly asks Walt to take him to the industrial laundry where Gus' superlab is hidden. He suspects that they might be hiding something there, saying
“In an industrial laundry, we’ve got one hell of a place to hide a meth lab”
But Walt realized that if he looked around long enough he was bound to find the lab, which would mean he find catch Gus, which means he would eventually catch “Heisenberg”. So he pretended to miss the exit and crashes his car before Hank can investigate.
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