An advertising company and a large car dealership, with a showroom in Iowa City, agreed to a $360,000 judgment to resolve claims that violated a Federal Trade Commission order prohibiting deceptive advertising when marketing costs of buying or leasing a car. The Billion Auto Group, which has locations in Iowa City, Sioux City, and Clive, and Nichols Media, Inc., the advertising agency, agreed to the stipulated judgment entered by U.S. District Court Tuesday.