The first presentation I attended on the second day of NAIAS was for Lincoln (no mention of Mercury). The MKT crossover has a roomy interior that manages to look and feel more upscale than that of the MKS sedan. Stitched upholstery on the center stack and center console are an improvement over silver-painted plastic. As in the MKS and the related Ford Flex, seats in the first two rows are very comfortable. So what’s not to love? That would be the clunky, chunky exterior.

From Lincoln I went to GM, where Rick Wagoner announced that the batteries for the Volt would be manufactured in Michigan. And that GM was going to make battery technology a core competence, with a new 31,000-square foot engineering center for them. And that LG Chemical (of Korea) has been selected as the supplier of the battery cells. One of these statements doesn’t fit with the others.

Then things started to really not add up. BYD, a Chinese battery and vehicle manufacturer, announced that it was going to be offering a five-passenger pure electric vehicle with a 250-mile range. The vehicle in question strongly resembles Honda’s Asian-market Odyssey. (All of BYD’s cars strongly resemble someone else’s car.) The technology that makes this possible? BYD’s breakthrough “ferrous” battery technology. Now, ferrous means iron. Who knew that iron was such a good basis for a battery? Also, batteries usually combine two elements. What’s the unnamed second element?

On the subject of knockoffs, the Chinese aren’t the only ones doing it. The photo above isn’t a BYD knockoff of a second-gen Toyota Prius–it’s a Honda knockoff of a second-generation Toyota Prius. Only even more ungainly. Meanwhile, Toyota introduced the third-generation Prius, which is much better looking than both the current car and Honda’s facsimile. Check out the attractive five-spoke 17-inch alloys. The high point of the roofline has been shifted rearward by four inches. While the official reason for this is more rear seat headroom, it also greatly improves the car’s proportions. Inside, the new Prius has more room and a more nicely finished interior.

Yesterday Lexus introduced its first efficiency-focused hybrid off the Prius platform, the HS250h. Which also happens to be the first U.S.-market Lexus with a four-cylinder engine. I took a look today. Nice interior, but the exterior makes the previous generation Corolla look nicely styled. I’m not seeing a Lexus in this exterior. Or in the powertrain, unless driveability is way up from the second-gen Prius.

Last I attended Fisker’s presentation, where a strikingly attractive (top up or down) hardtop convertible was introduced. It’ll become available in 2012.

I’ve had a number of questions about their Karma foor-door (hint: don’t call it a sedan):

1. How can Fisker manage to offer a stylish, luxurious, large (124.4-inch wheelbase, 196.3-inch length, 78.1-inch width) four-door car with a powerful hybrid powertrain (260 horsepower turbo four plus a pair of electric motors good for 400 horsepower) and monstrous 22-inch tires for conventional S-Class money? (base price is $87,900)

2. Can GM’s rorty turbo four possibly behave as an engine in a $90,000+ sedan is expected to behave?

3. How can such a car go 50 miles on a charge? A huge battery pack would add weight and cost. See surprisingly low price above.

4. How can a car with such swoopy sheetmetal comfortably accommodate four adults.

Well, after today’s presentation I was able to sit in the Karma four door. And it’s, well, C3 Corvette tight in the front seat, and even tighter in the back seat. (For reference, I’m 5-9 and the front seat was perhaps and inch farther rearward than I’d set it.) There’s considerably more room inside a Mazda RX-8, which has far more compact exterior dimensions. Getting in and out of the Mazda’s rear seat is also easier. Getting in and out of the the Karma is a head-and-knee-bumping chore thanks to a low roof and small door openings. I will grant that they’ve made the seats as comfortable as possible given the low seating position and limited interior volume. Still, a third-gen Prius is a limo in comparison. The trunk was not opened. I asked about cargo volume, and they responded, “Enough for two golf bags.” So perhaps 8 cubic feet. This is what happens when a designer is running the show. The Karma sedan is very much a four-door coupe–a Mercedes CLS taken to the extreme, with all of the compromises that implies.