2008 Porsche Cayenne Gts Sport Utility 4-door 4.8l on 2040-cars

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The 2017 Porsche 911 RSR goes mid-engine, purists be damned

Porsche unveiled its World Endurance Championship and IMSA WeatherTech Championship competitor with the 2017 911 RSR. And this 911 is different from the rest, as the 4.0-liter flat-six engine powering this beast is in front of the rear axle, not behind it. That's right, this 24 Hours of Le Mans competitor ditches the iconic rear-engine layout. Porsche isn't talking specifics on how exactly things are arranged back there. The engine is new, now based on the 991 911's block instead of the previous Mezger motor that's been used for years. The transmission design is new as well – it would have to be to accommodate the new location relative to the engine. The racecar has been engineered to meet the LM-GTE class, where it will go up against other mid-engine cars like the Ford GT and Ferrari 488 GTE. Moving the engine to the middle has given Porsche the ability to fit the 911 RSR with massive bits of aero, like the humongous rear diffuser that looks like it would be more at home on a machine of war. The only thing that can compete with the diffuser for size is the top-mounted rear wing, which shares a similar design to the one found on the 919 Hybrid. Going back to the engine, the direct-injected boxer motor, depending on the size of the restrictor, generates as much as 510 horsepower and sends all of its fury to the rear wheels. The engine is paired to a six-speed sequential gearbox, which drivers can employ through paddles on the steering wheel. The new engine doesn't have a lot of weight to push around as the 911 RSR, as required by regulations, weighs 2,740 pounds. Speaking of weight, the engine layout isn't the only change for the 911 RSR. For 2017, the car ditches its steel body for one that's made out of carbon fiber. The body attaches to the chassis via quick-release fasteners, making the vehicle easier to service as exterior elements can be removed with minimal effort. The racecar also gets a radar-based collision system – aptly named the "Collision Avoid System" – which is meant to limit the 911 RSR's encounters with faster LMP prototypes. Only time will tell if the new layout and aerodynamic components help the 911 RSR beat its competition. But there will be plenty of opportunities to see the racecar in action as Porsche plans to run the 911 RSR in 19 races during the 2017 season, the first of which will take place at the IMSA opener on January 28th at Daytona, where the racecar will make its track day debut.

Topiary Joe sculpts the ultimate in green cars

Efficient cars are all the rage these days, but Joe Kyte has made a business of crafting some of the coolest green cars around – literally. Kyte is better known by his nickname Topiary Joe, and in addition to being a talented artist, he is also a real gearhead. Kyte has been creating topiaries for the last 20 years. It began when he was marketing greenhouse products to Walt Disney World and saw their plant sculptures. He realized that he could do that and since then, has done around 3,400 pieces. His most intriguing creations are the rolling sculptures that move and turn. Prices for those start at about $18,000 and can be as high as $30,000. While, the wheels are machine-bent, Kyte said all the other parts are done with a table vice and a Lincoln Electric arc welder. Topiary Joe is taking the Porsche (pictured above) to Palm Beach later this year to sell or says he may donate it to Porsche North America. If you really want it, the sculpture is currently on Craigslist for sale for $24,000. Topiary Joe has also had a life-long love of cars. "I was driving my first MG Midget before I was 14," he told Autoblog. He grew up in Oak Ridge, TN, where the Manhattan Project was partially developed. He says the town was full of recent college grads driving Mercedes, and he caught the bug. His automotive mentor was a nuclear physicist who taught him to repair and restore the Mercs. Kyte has completed commissions for Sandals Resort, Dreamworks, Absolut, and many more. Among his favorite creations is the Ferrari that he created at the Abu Dhabi Grand Prix that is now exhibited at the airport each year before the race. Check out his website for a wider look at his work.

Modded budget Mazda Miata takes on new Porsche Boxster in more challenges

Earlier this month, our friends across the pond at Auto Express released the first in a two-video series that would see them try and build up a second-generation Mazda MX-5 Miata that could best a standard Porsche Boxster around the track. While that first video detailed the mods to the MX-5 - a supercharger, some suspension upgrades and a new set of super-sticky rubber being chief among them - and set baseline lap times for the stock car, today, we have the results of the 5,000-pound ($8,200) upgrade job.
Of course, we aren't going to spoil those for you. You'll need to watch the full video, which recaps the upgrades before digging into a comparison of both straight-line-speed differences between the 2.7-liter Porsche Boxster and blown Miata, as well as their behavior and lap times on the track.
Take a look and let us know what you think in Comments.