CORRECTION: On Dec. 6, the USPS's media relations manager, David Partenheimer, contacted Ad Age and said that LPI CEO Dan Goter mischaracterized the Postal Service's involvement during his interview with Ad Age . LPI's pilot program was carried out by a contractor the USPS works with. The USPS itself merely reviewed the advertising and artwork, and has no financial relationship with LPI. Furthermore, while there is a pending House bill calling for an expanded rollout, the Postal Service was not involved in drafting it -- in fact, Mr. Partenheimer says, the government agency is "deeply concerned" about potential damage to the Postal Service's brand. He wrote, "We have no plans to roll out any advertising on our own trucks and the very limited advertising that took place on trucks owned by private companies (that were not identified as postal trucks) was a short-term pilot in Colorado that ended awhile back." Ad Age regrets the error.