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Is the Jaguar XFR-S really worth $17k more than the XFR? [w/poll]

Adding performance to a car is rarely cheap - whether you're looking to do it yourself or rely on the factory to do it for you. In the case of the new Jaguar XFR-S, the cost differential over an already-impressive (and somewhat expensive) XFR is a stout $16,800. Auto Express recently got a hold of both cars to see whether that price pays off on the track.
For that price, Jaguar gives the XFR-S an extra 40 horsepower and 41 pound-feet of torque - for a total of 550 hp and 502 lb-ft - to go with a stiffer suspension, beefed-up differential and, of course, meaner styling. We don't want to ruin the results of the AE video, but right off the bat, the host says that you can feel the extra power of the XFR-S, but that it's not a "night-and-day difference."
Scroll down to see what happens when two high-powered Jags go head-to-head on a track. And then be sure to let us know whether or not you think the added money is worth it for the XFR-S in the completely informal poll below.

Jaguar Land Rover offers (some) detail about new Ingenium engine

Jaguar Land Rover officially announced its Ingenium family of engines with the unveiling of the 2.0-liter version in the Jaguar XE concept at the 2014 Geneva Motor Show, but it kept details very thin at the time. All we knew was that the new turbocharged mills could be configured to use gasoline or diesel, and be positioned longitudinally or transversely. Months later, JLR is finally letting some more info slip about its new baby, but there are still some big questions to be answered.
For the Ingenium project, Jaguar Land Rover gave its engineers a clean sheet of paper and told them not to worry about using any previous parts or machinery. In the end, the designers came up with a family of turbocharged, aluminum-block engines based around modular, 500cc cylinders to allow it to grow or shrink as the market demanded. The layout was also made adaptable enough to incorporate hybrid drivetrains, if needed. "Being configurable and flexible are the two key strands of Ingenium's DNA because we have future-proofed our new engines from the outset," said said Ron Lee, the company's director of Powertrain Engineering.
To maximize efficiency, Jaguar promises that all versions of the Ingenium engines come with computer-controlled, variable oil pumps and water pumps to use only as much energy as needed. They also get direct injection, roller bearings for the cams and stop/start. The diesel version alone has 17 percent less internal friction than the mill it replaces, the company claims. JLR is also promising class-leading figures for Ingenium's torque and horsepower too, but it's not giving away those specs just yet.

Waymo opens its self-driving taxis to 'Trusted Testers' in San Francisco

Alphabet's fully autonomous driving unit Waymo is ready to offer rides to select passengers in San Francisco, the company announced on Tuesday. Starting later today, residents can sign up to become "Trusted Testers." With an invite to the program, you can use the Waymo One app to take rides in the fleet of Jaguar I-Pace vehicles Waymo will have stationed in the city.  Waymo describes the Trusted Tester program as a "research-focused" effort designed to help it collect feedback on its ride experience, with an emphasis on gathering information related to accessibility.    "We kicked off this program last week with a select few and are now expanding the program to all interested San Franciscans," the company said. "We’ll begin with an initial group and welcome more riders in the weeks to come." Much like it did in Arizona, Waymo won't let the cars drive without supervision right off the back. The company will have employees in the cars to ensure its fifth-generation Waymo Driver technology doesn't get lost on San Francisco's tricky one-way streets and hills. The company also told Bloomberg passengers will ride for free.   The expansion comes after Waymo recently announced CEO John Krafcik was leaving the company to pursue other projects. Some saw Krafcik as being too slow to push the company toward commercialization.  This article by I. Bonifacic originally appeared on Engadget. Related Video: This content is hosted by a third party. To view it, please update your privacy preferences. Manage Settings.