Nikon D5100 & Nikon D7000 owners? Does these cameras shoot Black & White in camera?

Do either of these camera's shoot black and white in the camera?
I will eventually get both of these once I save up my money.
I have a D40x with a 18-55 mm VR AF kit lens(with a polarize), 18-70mm VR AF lens and 18-200mm VR (NON AF (with a polarize) lens as well as 2 battery's, and a ton of SD cards. (I'm a photographer, and mainly photography automobiles, as that is my passion. Which camera should I buy first, the D5100 and then get the D7000 later or the more expensive D7000 first then the D5100? Concerns and thoughts and opinions welcome.

Added (1). Simple, the 5100 has features the 7000 does not… And vice versa…

Yes they do

It is best, however, to black and white-ify the picture in post processing. Then, you will have a color picture as a master template to do whatever you please.

I'd go for the D7000 first, personally.

I'd go with the D7000. Awesome camera that has canon shooters looking twice.
I believe you can shoot in black and white on all of the current digital models, however I would never do it for a couple reasons. If a client comes back and says do you have this in color; I want control over my black and white images and how they appear. The best way to do that is to adjust the colors in a black and white photo. You need a color photo to do that in. As you probably already know if you let your camera automatically do anything it doesn't do it in the way you would choose to do it. Good black and white is a very tricky thing to achieve and letting the camera mess with it is not exactly a brilliant idea.

In both cameras, you can go into the "playback" menu and make a Black & White copy of the color photo so you will have both. That is my recommendation - especially if you shoot JPG. If you shoot Black & White to begin with, you will never be able to get a color photo.

You can also make a Black & White from a color photo in Adobe Lightroom.

On the other hand, if you shoot RAW, you can shoot a Black & White photo and actually convert it back to color in Adobe Lightroom. You can't do that with a JPG. So it all depends on what you want to do.

I have to ask, if you are getting the D7000, why get a D5100 too. If you want a backup, just buy two D7000s. You can buy the second one without a lens.

http://www.althephoto.com