It's a well-known fact that Twitter has done a remarkable job in establishing the personalities of many NASCAR drivers over the past 12-36 months.
Just ask Jimmie Johnson. Once blamed for being "vanilla," Johnson's been anything but on Twitter, speaking his mind on many topics. His interviews with the media have improved as a result, becoming much more colorful and brutally honest.
With that in mind, here's seven NASCAR personalities we desperately need on Twitter.