Darius Rucker’s 2013 No.1 hit, “Wagon Wheel,” has been certificated by the RIAA as 8X Platinum for sales of 8 million units.

The tune, which was written by Bob Dylan and Old Crow Medicine Show’s Ketch Secor, is now one of the Top 5 best-selling country songs of all time as certified by the RIAA.

Darius was surprised with a plaque presentation by the RIAA on Feb. 12 at the Country Music Hall of Fame.

“I don’t believe you,” said Darius. “I don’t believe this! Wow, what a testament to the fans and their love of country music.”

“Even in my wildest dreams for ‘Wagon Wheel,’ the singer was never me or Bob,” said Ketch. “It could have been a lot of different people who had the big hit with it. It could have been one of those perfect-smile guys with the made-for-TV personalities. That it was instead a salt of the earth singer like Darius is something divine I’ll leave to the theologians to figure out.”

RIAA Best-Selling Country Songs

1. “Cruise” – Florida Georgia Line, 11X Platinum
2. “Old Town Road” – Lil Nas X feat. Billy Ray Cyrus, 11X Platinum
3. “Need You Now” – Lady Antebellum, 9X Platinum
4. “Love Story” – Taylor Swift, 8X Platinum
5. “Wagon Wheel” – Darius Rucker, 8X Platinum