Tesla Motors (NASDAQ:TSLA) has made a huge splash with its all-electric Model S luxury sedan -- its first big move in its effort to become the electric-car version of Germany's BMW (NASDAQOTH:BAMXF).

But now, BMW is making its own first move on to Tesla's turf. Executives said this week that BMW already had 100,000 people signed up to test drive the all-electric car it plans to launch this fall. Is it time for Tesla to worry? In this video, Fool.com contributor John Rosevear takes a closer look at BMW's new electric car -- and gives his take on how it's likely to affect Tesla's sales.

Fool contributor John Rosevear has no position in any stocks mentioned. Follow him on Twitter at @jrosevear. The Motley Fool recommends Tesla Motors. The Motley Fool owns shares of Tesla Motors. 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.