2007 Lexus LS600hL

It would be easy to dismiss the Lexus LS600hL as the ultimate feel-good device, a literal limousine for limousine liberals, a $100,000 self-indulgence-mobile whose hybrid powertrain provides a veneer of environmentalism that allows its well-to-do owners to feel like they're doing something for the environment when they're really doing something for themselves.

But there's more to this car than that. As the apogee of the Lexus line, the LS600hL tells us a lot about how Lexus sees itself. Although the LS sedan dates back to the first days of Lexus, it's only now, with the fourth-generation car, that Toyota is bringing out a version to battle the twelve-cylinder competition from Europe. Tellingly, Lexus has not developed a twelve-cylinder model of its own. Instead, it attempts to equal their performance with a complex and expensive V-8 hybrid.

Predictably, Lexus does a very good job of rivaling the mighty twelves of Europe. By the company's own measure, acceleration from 0 to 60 mph (5.5 seconds) is a tad slower, while 30 to 70 mph is about the same, but this will hardly matter to anyone except maybe the teenage progeny of the owners, if they're out drag-racing the parental Lexus against a similarly spoiled and punkish prep-school classmate at the wheel of his dad's Mercedes-Benz S600. More important, Lexus engineers have made the complex powertrain work as a seamless whole. There's still the faintest degree of nonlinearity in response, mostly when you lift off the throttle, but under most circumstances, this is an exceptionally smooth propulsion system, and one that's almost eerily quiet. The continuously variable transmission masterfully imitates a conventional multispeed gearbox (with eight ratio steps available in manual mode). We also must commend the electric power steering and electrohydraulic regenerative braking for being utterly conventional in their responses.

Alone among the LS models, the LS600hL comes with all-wheel drive. You might expect that its purpose is to accommodate the increased torque (385 lb-ft versus 367 lb-ft for the LS460), but Lexus engineers insist that the system, which has a 40/60 percent rear bias but can send as much as 70 percent of the torque to either end, is there to provide better response in cornering. The LS600hL also adds active antiroll bars, which are called into play earlier in less severe corners (below 0.4 g) to reduce body roll. Nevertheless, the LS600hL is still too much of a limousine to be any kind of a playmate for an enthusiastic driver.

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