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

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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