Here's a weekly review of the vehicles manufacturers don't want you to see.

Motor1.com's readers are apparently very excited for the upcoming Porsche 911 Speedster because the votes make it the most popular spy shots for the second week in a row. Actually, we didn't have new photos of it and posted a spy video of the much-anticipated model instead. There's no new info about the 911 Speedster this week, but you can watch the clip again, below.

Things move pretty fast in the secret world of automotive development. Manufacturers are constantly testing prototypes in real-world environments, sometimes years before the debut of a new model. Meanwhile, spy photographers all around the world do their best to catch these machines so we may have a glimpse of what’s to come.

We're kept busy posting the latest information on a daily basis, but in case you missed something along the way, here’s a quick summary of all the latest SUVs, sedans, trucks, hatchbacks, and supercars we saw out and about this week. 

At the end of this slideshow, a box pops up, and you can enter your favorite vehicle from these spy shots. Next week, we'll let you know which one has the most votes.

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