At 2:12 p.m. ET on Tuesday, Yahoo! Sports sent a tweet to NASCAR driver asking him about his use of Twitter.

"What does Twitter allow you to do/convey to fans that you can't in a press conference?" we asked.

Four minutes later, he responded.

Tweet No. 1: Show emotion/authenticity.
Tweet No. 2: Not rely on traditional media to tell ur story.
Tweet No. 3: Engage the fans directly. Etc. Lots of things I guess

Things like holding his own "Twitter" press conference, which Keselowski did recently, and revealing pictures of his broken ankle.

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During a test session at Road Atlanta on Aug. 3, Keselowski lost the brakes in his No. 2 Dodge, slammed into a retaining wall at 100 mph and had to be airlifted to a nearby hospital. While there, he tweeted photos of his injured ankle:

In an era when little trust exists between athlete and reporter, when one clichéd response follows another, Twitter has provided athletes with a forum to be raw, original and, oh yeah, relay information at the speed –- 5 minutes ago -- that we want it.

And possibly no sport is revealed via Twitter more than NASCAR's Sprint Cup Series. With only 43 drivers on the track every week and about a dozen of those on Twitter, finding out what's going on behind the scenes and inside the heads of the athletes themselves is sometimes as easy as logging on to the web.

Want to know what Greg Biffle thought of Boris Said's verbal tirade after last Sunday's race at Watkins Glen?

Curious why Jimmie Johnson didn't stick with Dale Earnhardt Jr. in the closing laps of the July race at Daytona?

Want to know who has a sense of humor?

(NOTE: In May, Kyle Busch was ticketed for driving 128 mph in a 45-mph zone. The photo included in the tweet is a picture of the car he was driving.)

Two hours after responding to our tweet, Keselowski tweeted his whereabouts. You can see the proof here. What's interesting is that in his tweet, he says he was testing at Martinsville Speedway -– a session that went from 8 a.m. to 5 p.m. So we asked him: Did you respond to our question from inside your race car?

A minute later he responded.

"Yea."

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R2-D2, who? Nowadays it seems robots can almost do anything -- from driving a car to bartending to understanding human emotion. But can they take a corner kick?

Apparently so. Each year, teams of computer scientists from the around the world come together for RoboCup, an annual soccer tournament that highlights robotics research around the world. In this year’s RoboCup Tournament finale in Istanbul, Turkey, students from Penn's General Robotics, Automation, Sensing and Perception lab partnered up with a team of Virginia Tech students to use their DARwIn (“Dynamic Anthropomorphic Robot with Intelligence,”) robot to beat Japan and bring home a soccer victory to America (for once).

The full-size humanoid robot, CHARLI-2, won the adult-size robot soccer match with a penalty kick.

Take a look:

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CHARLI-2 also won the popular Best Humanoid Award, considered to be the Oscar for humanoid robots. (Tiger Woods came in second.) The trophy was in Japan for seven years before going to Germany for two. Now the U.S.-based Team CHARLI has captured the honor.

The Americans also built DARWIn-OP, which won first place in the Humanoid Kid Size competition. Penn developed the “software framework that provided each robot with artificial intelligence (AI) which guided the robots' walk, vision, and gameplay.”

The project hopes to create a team of fully-autonomous robots that can play soccer against humans by 2050. But for now, the physical skill at RoboCup still has much to be desired. The robots move somewhat awkwardly and deliberately, stopping often to scan the field for the ball. Or maybe they’re just looking for Posh Spice.

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