7 / PRNewswire / -- Kelley Blue Book , www.kbb.com , the leading provider of new car and used car information , today reveals possible effects of the Cash for Clunkers program on the used-car industry as reported in the company 's August 2009 Blue Book Market Report . As dealers and consumers continue to take advantage of this program , Kelley Blue Book analysts forecast a likely bubble in used-car values , which could deflate as the Cash for Clunkers program comes to a close .