Ugh, you guys are seriously the worst -- you keep getting these things right! Let's get right to it:

Kerry Martin flipped her monitor around to arrive at this guess -- creative, but not what we were looking for.

Josh Rovner had a good guess about student loan payoff duration. Sadly, I think those numbers are significantly higher than what's in the chart.

Washington Post staffers submitted mostly unhelpful guesses, as usual:

But in the end, as many of you guessed, the correct answer was average age of all light vehicles in the U.S.

data-named

These figures were in the news lately with Warren Buffett's purchase of a number of U.S. auto dealerships. With the average age of vehicles increasing steadily over the past few decades, some analysts think that there's a lot of pent-up demand for new cars. On the other hand, cars are getting more reliable, and every month that passes without a car payment is, frankly, a gift.

On Twitter, Anthony couldn't freaking *believe* how easy this one was:

But he wasn't the first to get it right: That honor goes to Dennis Dillon, who just earned himself the Earlybird Prize for Prompt and Expeditious Accuracy.

But who got it rightest of all? A number of you linked to the Department of Transportation Web site containing the data series, but only one included a link to the release that included 2014's data. That would be commenter afver, who noted the 2014 press release from IHS.

Congrats, afver! You are now a Wonkblog-Certified Data Wizard. Everyone else, let's try this again on Friday.