Lookout Twiterverse, cause I’m not sure you are ready for your newest member @DaleJr. NASCAR’s most popular driver garnered more than 430,000 followers in less than 24 hours.

"Tonight seemed like as good a night as any to join Twitter," read his first tweet. "How is everyone doin?"

Earnhardt pledged to former teammate and current FOX Sports analyst Michael Waltrip on the pre-race show that he would join Twitter if he won the Daytona 500. Eleven hours later, he made good on that promise.

“I thought it be after an event like a championship,” said Junior. “So it just felt natural last night to kick it off.”

If it looks like Junior got the hang of this Twitter thing rather quickly, well that’s because, he’s not exactly a social media rookie.

“I’ve been around on social media before, “said Junior. “I just felt like I was going to join Twitter sooner or later. I just didn’t know when.”

Oh and as for what finally tipped the scales when it came time for Earnhardt to take the Twitter plunge, that’s something else you can blame Jimmie Johnson for.

“It’s becoming such a big part of our lives and big part of our sport for exposure. It’s important to our partners,” said Earnhardt, Jr. “Jimmie (Johnson) has been putting a lot of pressure on me and talking to me about joining. I’m having fun with it.”

This could be a game changer for NASCAR in the Twitterverse. Junior is the sport’s most popular driver and his presence on Twitter will have an effect beyond just his account. Just ask Martin Truex, Junior.

“In the midst of @DaleJr getting 400k followers in his first day on twitter I have surpassed the 200k mark,” Truex, Jr. tweeted Monday. “Thanks for the help bro.”

The win at Daytona was the second for Junior and the 10 years between 500 wins, the largest in the history of the race.

“This is amazing. I can't believe this is happening,” said Earnhardt, Jr. “I'll never take this for granted, because this just doesn't happen twice, let alone once. I'm so thankful. Thanks to all my fans out there for supporting. We pretty much might be in the Chase? We get that off our chest and we are two-time Daytona 500 champion!"