So you say you haven’t heard of Japanese mega star Rollerman? Please allow us to help you remedy that injustice, with a short look at this fascinating video above. Here, the wheeled-wonder takes on some dude riding a motorcycle, in a battle that teaches lessons about carrying speed through the corners. Watch and learn.

+ YouTube: Human bobsled vs. motorcycle

Just in case you missed the first announcement; the Nissan GT-R is very, very fast about rounding the Nürburgring. A new and more comprehensive video has recently surfaced, showing yet again the powerful 7 minute and 29 second lap that Godzilla was able to churn out. The new video comes in response to claims by Porsche that the Nissan is not in fact capable of recording such a lap. Click on the player above, brush up on your Japanese, and judge for yourself.

+ Edmunds Inside Line: Still Not Convinced? Nissan Reveals Second GT-R 'Ring Video

After a lovely dinner at B.B. King's in downtown Memphis and a good rest, we're back on the road with the Audi Mileage Marathon. Today's drive will take us from Memphis to Dallas by way of Little Rock, where we will stop for lunch.

So far, our Q7 has averaged fuel economy numbers of 28.8 miles per gallon. One other car got the same readings, so we're tied for best fuel economy. Our average speed, however, is a bit below the curve. We've averaged 60 miles per hour thus far, though our attempts at drafting behind semis and using the adaptive cruise control have indeed aided our MPGs.

As for the other cars, the leading A4 is averaging 44.8 miles per gallon at 61 mph, the leading Q5 is averaging 38.5 mpg at 59 mph, and the (only) A3 is getting readings of 41.1 mpg at 59 mph. Stay tuned to see how these numbers change throughout the rest of our drive.

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After a healthy response from our fair readers on the question of naming our new long-term Jetta TDI we’ve managed to narrow down the list to five potential winners. Vote (in the box below) for your favorite name over the coming weekend and we’ll tally up the results on Monday. First place gets a box full of Winding Road//NextAutos goodies – though we may have something left over for second and third as well. Happy Voting!

Cancel your trip to Montreal— Formula 1 will not be there this year. After the World Motor Sport Council met on Tuesday, they announced that there would be an amended 18-race calendar, omitting the Canadian Grand Prix, staged at the Circuit Gilles Villeneuve in Montreal.

The race was originally scheduled for June 7 has been replaced by the Turkish Grand Prix on June 9 and in turn created a “summer break” in August.

The decision came as news for even the ace organizers at Circuit Gilles Villeneuve, who have refused to comment until they had a chance to speak with the FOM and the FIA. Races across the Atlantic cost the teams a hefty sum and organizers have been looking for ways to cut down costs. Sadly, what this leads to is the lack of Formula 1 on North American soil.

+ F1-Live: Canadian Grand Prix Axed

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Even those who aren’t among the car’s die-hard fans tend to have a strong opinion about the Z cars from Nissan, and the new 370Z that we caught a look at today won’t be any exception. Based on what you’ve seen so far, is the 370Z an improvement over the current generation 350Z? Perhaps there’s something about the older car that still stirs you more? Share your Z insights, in comments. 

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More strange and lovely than we might have surmised from the initial release of press information and photos, Renault’s Ondelios Concept is just the sort of vehicle that Francophiles dream of. The concept’s flawless and curving grille nicely picked up the swooping lines found on every Ondelios exterior surface, and the glowing white Renault diamonds were fine details as well. Have a closer look for yourself in our gallery above, or reread the Renault press release here .

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Say this for Mazda designers; they certainly know how to get some serious mileage from a single design theme. Casting its tried and true Nagare styling language into the form of a highly efficient city car, Mazda came up with the flowing Kiyora for the Paris show. The concept may look radical, but it is powered by a truly conventional small four-cylinder engine; relying more on a slippery shape and lightness to make mpg headway.

Have a closer look at the Kiyora in our huge live image gallery of the concept above.

We've now driven about 250 miles on our way from Chicago to Memphis in the Q7 3.0 TDI and things are going well. We haven't made any attempts to draft behind eighteen-wheelers or do any other sort of fuel-saving techniques, and we've been able to observe fuel economy numbers of 28.6 miles per gallon. This seems to be in line with some of the higher MPG numbers that the Q7 groups achieved on the first wave of the event.

We'll be sure to give more updates as we continue on with the Audi Mileage Marathon, and hopefully the NextAutos team can win the first place rank for fuel consumption in the Q7.

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One of our favorite pure concept cars from this year’s Paris show, the GT by Citroen does its damnedest to be all things to all people. With a little help from the shrewd minds at Polyphony Digital—makers of the Gran Turismo series of driving simulators—the GT combines otherworldly sex appeal with a 21st century consciousness via a hydrogen fuel-cell powertrain. The fertile minds of French auto designers may bend toward the wacky on most occasions, but we think the GT will prove memorable for Citroen.

Have a look at our live gallery of Citroen GT images above or click here to read our previous post.