US regulator missed its best chance to catch VW cheating
![US regulator missed its best chance to catch VW cheating](http://bloximages.chicago2.vip.townnews.com/tdn.com/content/tncms/assets/v3/editorial/8/1a/81aaacea-842f-5e7c-aac3-e60e68553284/560e2c16c1bc3.image.jpg?resize=300%2C200)
CHICAGO (AP) — More than a decade ago, the U.S. Environmental Protection Agency helped develop a technology that ultimately was used by an independent laboratory to catch Volkswagen's elaborat…