While per capita volume may stay down, US millennials will drive millions of sales for OEMs in the coming years. One advantage brands have in this effort is that interest in automotive content remains strong. The 18-to-34-year-old segment still makes up a large portion of digital automotive media consumption. Males in this age group visited automotive websites in greater proportion than any other group, according to a June 2012 Nielsen survey. Taken as a whole, 18- to 34-year-olds were a very close second to Gen X. Read the rest at eMarketing.