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VW joins Daimler's protest of new A/C refrigerant as EU deadline for compliance passes

The case of Dupont and Honeywell's refrigerant R-1234yf is doing the exact opposite of keeping things cool. The two chemical companies have spent years and hundreds of millions of dollars developing R-1234yf to replace R-134a, the new refrigerant shown to be 99.7-percent kinder to the environment than the one it is meant to succeed. Part of that development has been years of testing by governments, outside safety agencies and automakers to approve the chemical for use in cars. It passed the protocols necessary for the European Union to declare that new and significantly revised cars from 2013 onward needed to use R-1234yf, and mandated that every car as of 2017 must use it.
Enter Daimler AG. The automaker created a head-on collision test with a B-Class at their Sindelfingen test track that would lead to the pressurized refrigerant being sprayed on the engine. The result in 20 out of 20 test was that the refrigerant burst into flames as soon as it hit the hot engine, while Daimler says that R-134a does not catch fire in the same test. Another unexpected result of the R-1234yf test was the release of hydrogen flouride, a chemical far more deadly to humans than hydrogen cyanide, emitted in such amounts that it that turned the windshield white as it began to eat into the glass.
Said a Daimler engineer in a Reuters piece, "It was scarcely believable. The most complicated lab tests conducted using the most sensitive measuring instruments around found nothing and all we do is drive a car around a couple of times, open a tiny hole in the refrigerant line and the next thing you know the car is on fire." So Daimler said it wouldn't use the refrigerant, and it recalled the cars it had already shipped with R-1234yf.

Lewis Hamilton cruises to victory at the Singapore Grand Prix

SINGAPORE (Reuters) - Britain's Lewis Hamilton eased to victory from pole position at the Singapore Grand Prix on Sunday as the Mercedes driver extended his championship lead over Ferrari's Sebastian Vettel to 40 points with six rounds remaining. Hamilton held off a mid-race challenge from Red Bull's Max Verstappen to register a record-equaling fourth triumph at the floodlit Marina Bay Street Circuit track, while Vettel finished third to slip further behind in the title race. "Great job everyone, what a weekend... keep pushing, keep pushing, we've got this," Hamilton told his team over the radio soon after crossing the line at the end of the 61st lap. Hamilton's 69th overall victory was his seventh of the season and it was built on the foundations of a stunning qualifying lap on Saturday, when he stormed to pole in a car deemed inferior to the Ferraris and Red Bulls on this circuit. For Vettel and Ferrari it was another disappointing weekend after the car showed plenty of pace through all three practice sessions, the German's cause not helped by a questionable strategy and a poor pitstop. Hamilton won this race from the third row a year ago when Vettel, Verstappen and Kimi Raikkonen collided before Turn One but there was no repeat of such drama this time after the drivers got off to a clean start at the head of the field. There has, however, been a safety car period in every race in Singapore since it joined Formula One in 2008 and it was deployed on the opening lap after Sergio Perez pushed his Force India team mate Esteban Ocon into a wall after Turn Three. "Sorry guys there was no room," Perez told his team over the radio. Vettel got past Verstappen before the safety car emerged and slotted in behind Hamilton, but his race unraveled when the German pitted first on the 14th lap but got stuck in traffic and overtaken by the Dutchman when he made his stop for fresh tires. BACK MARKERS Hamilton was cruising up front but suffered a mini-crisis on the 38th lap when he got stuck in a queue of tail-enders, which allowed Verstappen to get right up behind him. The Dutchman had a look up the inside as Hamilton struggled to pass the back markers but the Briton just stayed ahead and was able to pull clear all the way to the checkered flag once he had a clear track ahead of him. "It definitely got a little bit interesting toward the end with the back markers as you could already feel the draft from the cars when you were five and six seconds behind," Hamilton added.

Paul di Resta returns to DTM with Mercedes

Some drivers manage to make the transition from one form of motor racing into another, and some run into trouble. Take Paul di Resta, for example. The promising young Scottish driver dominated Formula 3 racing in Europe in 2006, then moved over to Germany's hugely competitive DTM touring car series where he finished second in 2008, third in 2009 and first in 2010. But things didn't go as smoothly for Paul - cousin to retired Indy champion Dario Franchitti - when he moved in to Formula One with the Force India team.
In three years on the grid, he failed to score a single podium finish. Little surprise, then, that Force India opted not to renew his contract for this season. Left without a ride, di Resta is now going back to DTM with longtime supporter Mercedes-Benz, testing the new C-Class touring car today in Portugal. It's good news for Mercedes, which is celebrating 120 years in motor racing this season and, with 2005 champion Gary Paffett also on board, can now count two former champions on its DTM roster.
We wouldn't count Paul out of F1 for good, though. When he won the DTM title four years ago, he was also moonlighting as Force India's test driver, and we wouldn't be surprised to see him pull similar double-duty with the Mercedes F1 team (or another Benz-powered outfit) this year before spring-boarding back into grand prix racing in the future. At 27 years old, he may not have been the youngest driver on the grid this year, but he's still got a good few years ahead of him.