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This classic Jaguar XJ has a 720-hp ungentlemanly secret

Forget Tawny Kitaen. If you want to make a Jaguar XJ rock, just do what this guy did: stuff a heavily modified and turbocharged General Motors V8 under the hood, and take it to the track.
The video calls this Series 1 XJ a sleeper, but with its open exhaust and obvious turbo whistle, the once-gentlemanly sedan is anything but. The owner says that the engine is GM LQ9 V8 that has been stroked to 402 cubic inches putting out around 720 horsepower with 12 pounds of boost (in standard form, this 6.0-liter V8 was used in the second-gen Cadillac Escalade). Check out the video below to see what that kind of power does for this classic Jaguar in the eighth-mile.

Jaguar I-Pace EV has a new pedestrian warning sound: Listen to it here

Jaguar's production of its first electric car means it also has to deal with a problem everybody else has been trying to solve: noise, or rather, the lack thereof. People can hear an engine at low speeds when they're walking along a sidewalk. The same can't be said for silent-operating electric cars. We wrote about Chevrolet's latest solution to the noise problem a few weeks back, and now Jaguar is sharing what it came up with for the I-Pace. The noise it didn't use is almost more interesting than the one it did, though. Jag says its first iteration was meant to be spacecraft/UFO inspired, but apparently it was so convincing that people tended to look up at the sky instead of at the road. Engineers switched it to what seems like a pretty general hum sound for production. Take a listen yourself in the video above — you'll hear the noise at the 40-second mark, and a few other spots after that. The sound is emitted from a speaker behind the grille at speeds up to about 12 mph. It'll change in pitch and volume to correspond to the increasing or decreasing speed of the vehicle — it even changes tone when you shift into reverse to signal a change in direction. Jaguar says the noise is no longer needed at speeds above 12 mph because tire and wind noise become sufficient enough at that speed. Chevy turns the noise off on the Volt at about 20 mph, however, showing that manufacturers haven't really come to a consensus on what should be happening. A U.S. law that hasn't gone into effect yet will ask manufacturers to keep the noise at up to 18.6 mph, though. We happen to be partial to the jaguar growl heard right at the end of the video as a warning sound. That's how you make an entrance with a Jaguar. These kinds of systems are necessary to warn those who might be blind or visually impaired, but distracted walkers are a huge demographic of people needing a warning too. Everybody walks around with their head buried in a phone nowadays, making silent vehicles a hazard of our own habits. Jaguar says it specifically engineered the noise so that it doesn't intrude upon the cabin, so only pedestrians are bothered by the hum when slowly plodding through cities. Jaguar I-Pace pedestrian warning sound View 10 Photos Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings. Green Jaguar Green Driving Technology Crossover SUV Electric Luxury pedestrian safety jaguar i-pace

Jaguar-Land Rover will use recycled waste to make parts for future models

Jaguar-Land Rover's future models will be partially made of junk. The company announced it's working on integrating a recycled material named Econyl into its manufacturing process in the coming years. Created in 2011 by Italy-based Aquafil, Econyl is a fiber made with a blend of recycled industrial plastics, fabric offcuts sourced from clothing manufacturers, and discarded fishing nets aimlessly floating around the ocean. It's more eco-friendly to produce than oil-based fibers, according to Jaguar, and it helps clean up the planet. Jaguar and Land Rover will use Econyl to make floor mats in the not-too-distant future. Neither company listed the models they'll put the material in, but it's reasonable to assume recycled floor mats will be available in the next-generation XJ, which will be electric, and the next-generation Range Rover. Both will be released in 2021. Eco-friendly materials are slowly but surely spreading across the luxury car segment. Jaguar already offers the I-Pace with a Kvadrat upholstery that combines regular wool and up to 53 recycled plastic bottles per car. Audi's fourth-generation A3 is optionally available with an upholstery made largely using recycled plastic bottles, and Volvo estimates at least 25% of the plastics in its cars will be recycled starting in 2025. Environmentalist organizations are putting an increasing amount of pressure on carmakers to deliver so-called vegan interiors. A group called EarthSight recently accused several companies (including Jaguar-Land Rover and BMW) of using leather from cattle raised on illegally logged lands in Paraguay. Representatives for the British company stressed they found no evidence to verify EarthSight's claims. Related Video: