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Recharge Wrap-up: Houston's bus revival, autonomous trucks on the Autobahn

A documentary shows how Houston, Texas significantly improved its outdated bus system. Called High Frequency: Why Houston is Back on the Bus, the short film describes how the city reimagined its bus system to become more efficient, more useful and more popular. Despite some opposition, the change has proven to be effective, with bus ridership up eight percent in three months, and light rail ridership up due to complementary bus routes. See the video above, and read more at CityLab. Automakers sent autonomous semi trucks on the German Autobahn as part of the European Truck Platooning Challenge of 2016. Mercedes-Benz, Volvo and Scania, among other groups, sent platoons of trucks between Stuttgart, Germany, and Rotterdam, Holland. In Mercedes's platoon of three trucks, the lead truck was fitted with lasers and other sensors to guide the convoy down the road. The two following trucks relied on vehicle-to-vehicle communication to trail 50 feet behind the lead, making room for cars to come between them and closing the gaps when able. The close following distance provides fuel economy gains of up to 10 percent in the rearward trucks on account of the reduction in drag. Read more at Hybrid Cars. Renault has reduced NOx emissions in its Euro 6b diesel vehicles in real world driving conditions. By improving its exhaust gas recirculation systems and NOx traps, nitrogen oxide emissions are cut in half on average, under certain driving conditions. The improvements will be included in vehicles leaving the factory beginning in July of 2016. Beginning in October, owners of Renault Euro 6b diesels can have the modifications added to their cars for free. Read more from Renault. Tata Technologies is creating an innovation lab in California to partner with EV technology companies. Having a tech center in California allows Tata to work on technologies that will largely be deployed in the company's main market of Asia. "Today, we are partnering with companies and startups who have aspirations to sell in China, but a lot of what they do is in California," says Samir Yajnik of Tata Technologies. Read more from The Economic Times. BMW's i Ventures is investing in mobility-as-a-service software provider RideCell. RideCell provides technology for services such as carsharing, ridesharing and other transit services. "The convergence of transportation trends in cities is of key importance to BMW," says Ulrich Quay, head of BMW i Ventures.

Coming Toyota Supra to forgo hybrid, get a BMW six-cylinder turbo?

For years, almost all of the talk about the Toyota FT-1 concept becoming a resurrected Supra envisioned a hybrid under the hood. And then the latest take on Future Toyota 1 showed up at the 2014 Detroit Auto Show and - although Toyota wouldn't say a word about any engine at all - horizons began to expand. Imaginary fancies were aided by the news that Toyota had partnered with BMW to develop a sports car on the next-generation BMW Z4 platform, which would necessarily mean an engine bay designed to accept an old-fashioned hunk of gas-burning iron-working solo. Car and Driver now turns the whole thing around, reporting that there will be an inline-six with forced induction provided by BMW under the hood. What about that hybrid, though? The report states, "there's currently no indication that the Silk Road cars will offer hybrid options" - 'Silk Road' being the codename for the jointly-developed vehicles. CD makes a point to note that said tidbit came from Germany, not Japan. However, designers at Toyota's Calty studio did tell Automotive News last year that they designed the body with an inline-six in mind, a nod to the Supra's history. Hybrid rumors aren't dead yet, though - remember, we were hearing about all-wheel drive and supercapacitors in May 2014. The coupe is predicted to be a 2018 model, making its appearance sometime in 2017, and be "about 10 percent" smaller than the FT-1 concept. Related Video:

BMW M4 vs. Lexus RC F in Head 2 Head sports coupe showdown

It's the showdown everyone's been looking forward to, the East versus West grudge match of the year. We're talking, of course, about the BMW M4 versus the Lexus RC F.
Although BMW uses a twin-turbo straight-six and the Lexus uses a free-breathing V8, the two are pretty closely matched on paper: a luxury coupe with over 400 horsepower channeled to the rear wheels.
The BMW has been doing these cars for longer, and the M4 boasts a higher power-to-weight ratio. But then the RC F has more power - and without forced induction to break up the rev range. So which is the better luxury muscle coupe? Watch the latest episode of Motor Trend Head 2 Head to find out.