According to a new report from Edmunds.com, sales of used cars were down 6% in the first quarter of 2013. New-car sales were up, but the pace of growth has slowed down greatly since the end of last year.

Is the economy slowing, or is something else going on? In this video, Fool.com contributor John Rosevear takes a closer look at the numbers -- and at some emerging trends that could favor automakers like Ford (NYSE:F).

Motley Fool contributor John Rosevear owns shares of Ford and General Motors. The Motley Fool recommends Ford and General Motors. The Motley Fool owns shares of Ford. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.