1970 Cadillac Eldorado on 2040-cars

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Carpool Deville aims to be the world's fastest hot tub

The world needs crazy inventors with wild dreams. While we might not long for the things that they create, their contraptions certainly make the day a little more enjoyable. Take the Carpool Deville as an example. Nobody (well, almost nobody) is asking for a hot tub fashioned from a 1969 Cadillac that is still drivable. But now that you know that such a beast exists, don't try to tell us you aren't at least intrigued.
The team behind the six-year-long project has a pretty ingenious setup worked out. The Caddy's original 472-cubic-inch (7.7-liter) V8 both provides propulsion and heats the water. The interior is entirely replaced with a watertight, fiberglass tub that includes working jets, and the controls are all done by hand.
As if just building a mobile hot tub isn't enough, the team behind the Carpool Deville plans to take it racing too. Specifically, they intend to go to the Bonneville Salt Flats later this year to make a top speed run while immersed in water at over 100 degrees. They even have a roll cage all set to install to meet the safety requirements there.

Why we can't have better headlights here in the U.S.

It wouldn't be a European auto show if we weren't teased with at least one mainstream vehicle we can't have here. At the Geneva Motor Show last week, the small but vocal contingent of shooting-brake buffs lamented that the Mazda6 wagon won't be coming to our shores, although they can take comfort in the fact that the vehicle won't get the torquey 250-horsepower 2.5-liter turbocharged gasoline engine we'll get here. Mercedes-Benz also announced a new headlight technology in Geneva that likely won't be available here anytime soon. It's just the latest in a long line of innovative and potentially lifesaving front-lighting solutions that the federal government doesn't allow in this country due to outdated standards — and a current lack of leadership at the U.S. Department of Transportation. Mercedes-Benz's new Digital Light system that debuted in Geneva uses a computer chip to activate more than a million micro-reflectors to better illuminate the road ahead. The Digital Light headlamps works with the vehicle's cameras, sensors and navigation mapping to adjust lighting for the given location and situation and to detect other road users. The Digital Light technology also serves as an extended head-up display of sorts by projecting symbols on the pavement ahead to alert drivers to, say, slippery conditions or pedestrians in the road. And it can even project lines on the road in a construction zone or through tight curves to show the driver the correct path. Digital Light will be available on Mercedes-Maybach vehicles later this year, although like any technology it's bound to trickle down to less expensive vehicles. That is, if we ever get it here in the U.S. Audi, a leader in automotive lighting, has repeatedly run into snags trying to bring state-of-the-art car headlights to the U.S. The German luxury automaker's recently introduced matrix laser headlight system, which performs many of the same trick as Mercedes-Benz's Digital Light, also isn't legal on U.S. roads. And five years after the introduction of its matrix-beam LED lighting, which illuminates more of the road without blinding oncoming motorists with brights by simultaneously operating high and low beams, Audi still can't bring that technology to the U.S. either.

Best luxury SUVs of 2022 and 2023

Once upon a time, the idea of a luxury SUV meant a Range Rover, and even that was pretty agricultural by modern standards. Then Jeep Grand Cherokees and Ford Explorers started offering fancy, range-topping versions followed soon by Lexus, BMW and Mercedes dipping their toes in the water. And then the floodgates opened. Today, there is a staggering number of luxury SUVs available in every shape, size and price point. There are electric luxury SUVs like the Tesla Model X and Jaguar I-Pace, as well as gas-swilling, high-performance SUVs like the BMW X5 M and Cadillac Escalade V. Sports car makers Porsche, Aston Martin and Lamborghini have even dived in.  But of this great many, which are the best luxury SUVs? We sat down, scoured our reviews, took some votes, had some discussions and came up with the luxury SUVs we view as the best. They are listed alphabetically within the six segments listed below.  Best Subcompact Luxury SUV   |   Best Compact Luxury SUV   |   Best Midsize Luxury SUV (Two-Row) Best Midsize Luxury SUV (Three-Row)   |   Best Flagship Luxury SUV (Two-Row)   |   Best Flagship Luxury SUV (Three-Row)  Best subcompact luxury SUVs Mercedes-Benz GLB-Class Why it stands out: Outstanding space and versatility; legit luxury interior; amusing GLB 35 versionCould be better: Overwhelming and confusing tech interface Most subcompact luxury SUVs are a dubious value, with cramped interiors of marginal quality and unrefined driving dynamics. You'd be much better off paying less money for a loaded, non-luxury compact SUV. The Mercedes GLB is different, though. Its boxy design provides space few other subcompact SUV can match (luxury or otherwise), while its cabin design and feature content are in keeping with pricier Mercedes models. The quality's not exactly up to GLC standards, nor is driving refinement, but the difference is appropriate for how much you're saving and still perfectly acceptable. There's nothing dubious about buying a GLB.     Volvo XC40 Why it stands out: More features for the money; spacious and versatile interior; distinctive design; electric versionCould be better: Fuel-efficient base engine only available with FWD Most subcompact luxury models feel a bit like cheap knockoffs of their bigger, pricier brand mates. The XC40, by contrast, is a break from the Volvo norm in a good way.