2004 Buick Lesabre Limited Sedan 4-door 3.8l on 2040-cars

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2017 Buick LaCrosse an evolution of sharp Avenir concept

After years as a bloated, uninspiring, but comfortable near-premium sedan, Buick has taken the wraps off a leaner, lither, far more stylish LaCrosse. The third-generation model has just made its debut at the 2015 Los Angeles Motor Show. While there's a lot to talk about, let's first address the new, Avenir-inspired sheetmetal. The fascia is basically the concept car smoothed over into production form, featuring the same winged trishield. In place of the chrome-trimmed waterfall, the LaCrosse gets a blacked-out, recessed grille with a chrome surround. It looks good in photos but it's better in person, adding a real sense of complexity and depth to the front end. The headlights and lower fascia, meanwhile, adhere closely to the concept. The same cannot be said of the LaCrosse's tail. While the taillight lighting pattern is similar, the overall shape of the lighting element is radically different, refining the design featured on the back of the Regal. Also gone, sadly, is the Avenir's boattail rear deck. Instead, the LaCrosse gets a small rear deck that curves up into a pleasant duckbill spoiler. The rest of the tail is pleasantly restrained. Perhaps the weakest point is the profile, where Buick has instituted a "split-spear" design, featuring a strong shoulder line above the rear wheel well, which sits below an even stronger character line that curves down and towards the front of the car. It strikes us as just a little too much, like the Impala. Underneath that sheetmetal, Buick has managed to trim nearly 300 pounds of body fat, nearly half of which came from the vehicle's actual structure. That 300 lbs, according to Buick's engineers, is equivalent to a Kenmore side-by-side refrigerator, in case you needed a helpful comparison. Despite the weight savings, Buick has upped the torsional rigidity for this new model by 15 percent. The LaCrosse's cabin features a strong, cockpit-like design, with a high, floating-bridge center console. This is possible due to Buick's adaption of the Electronic Precision Shift system, introduced earlier this month on the new Cadillac XT5. Despite the new-fangled console design, Buick's retained the wraparound cabin style introduced on the second-gen model. Based on a quick crawl around the interior, space is great in front, although ingress in back is somewhat difficult due to the roofline. You're probably wondering why we haven't said anything about the mechanicals just yet.

Buick really wants us to know the new Cascada convertible won't leak

Quality testing on the factory floor is nothing to joke about. Automakers need to make sure the work being done is up to snuff, and that means some extensive checks. For Buick, that means using a lot of water for each of its Cascada convertibles. Each vehicle that rolls off the floor is subject to a high-pressure, ten-minute soaking that sprays nearly 20 gallons of water from each nozzle during every bath, just to guarantee the fabric roof hasn't sprung any leaks. For some reason, Buick has chosen to show off this testing with the help of what we imagine is the Gorton's Fisherman's baby cousin. Check out the strange testing video, available up top.

Question of the Day: Coolest factory-supercharged car?

Last week, we discussed possible engine-swap recipients for the plentiful-in-every-junkyard Eaton-supercharged GM 3800 V6 engine. The Buicks, Oldsmobiles, and Pontiacs that came with that engine from the factory were reasonably cool, of course, but when you look at all the production cars that have been available with supercharging over the decades you can find some pretty amazing stuff. My personal favorite has to be the Paxton-blown Studebaker Larks of the early 1960s, partly because the Lark was just about the stodgiest-looking, sleepiest little sedan available in America, possibly the most ridiculous recipient of a howling force-fed V8 imaginable, and partly because of the name of the optional supercharged 289-cubic-inch V8 you could get in the Lark: Jet-Thrust! What do you say is the coolest factory-supercharged car of all time? Related Video: Auto News Buick Automotive History Performance Classics supercharger questions