Mazda's two MX-5 SEMA concepts are among the best in show

If you think this is your average MX-5, look at the windshield, dummy.

This is the MX-5 Speedster Evolution.

It's the second iteration of the Speedster concept.

This one is brilliant in its white-painted splendor.

The front clip is largely unchanged, save for a new badge.

But once you look at the whole package, you'll notice there's no roof and no windshield.

The cover just behind the rear seats gives this car a rather aggressive look from behind.

The center-mounted exhaust is a nice touch, too.

This car is nearly 250 pounds lighter than a standard MX-5.

The interior is a bit racier, as well, with new materials and a racing steering wheel.

There's also a configurable display in place of the standard gauge cluster.

The racing seats are a perfect complement for this aesthetic.

Even the wheels are prettier than usual.

If only this were available to the public. Too bad it violates so many federal guidelines.

On the other side of the MX-5 spectrum is the MX-5 Kuro concept.

"Kuro" is Japanese for "black." Guess where that name came from.

The car's matte-black finish looks great on the Miata. Too bad it's not a factory option.

Since it's based on the MX-5 RF, the Kuro concept comes with that sweet, sweet retractable targa top.

The center mount exhaust is present on this concept, as well.

Oh. My. God. Becky, look at her buttresses.

Certain Roadshow editors don't like the retractable fastback roof. I think those editors are dumb.

The Kuro concept rocks a set of lightweight RAYS wheels...

...which were taken from the MX-5 Cup racecar.

Are we sure Mazda can't add matte black to the standard paint lineup?