For the first time in a long time, Detroit is gaining ground: Ford (NYSE:F), General Motors (NYSE:GM), and Chrysler all posted gains in U.S. market share in the first quarter, with sales growth that outpaced the overall market.

What's going on? In this video, contributor John Rosevear explains how it's all about the product – and also about some economic trends that especially favor Detroit's Big Three right now.

Motley Fool contributor John Rosevear owns shares of Ford and General Motors. Follow him on Twitter at @jrosevear. 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.