KANNAPOLIS, N.C. -- If you spot a NASCAR license plate that reads "GMAW," you may very well be following racing royalty.

Martha Earnhardt is the late great Dale Earnhardt’s mother, and proud grandmother to his son, Dale, Jr.

On the family’s legacy, she says, “My husband started driving, then my son, and now my grandson. It’s been in our family since I was 18.”

The state Department of Motor Vehicles offers 25 specialty NASCAR plates, including one with Dale Earnhardt, Jr.’s number 88.

On Monday at a license plate bureau in Kannapolis, Martha Earnhardt joined Dale Jr.’s mother Brenda Jackson, and his sister Kelley Earnhardt Elledge to show off their specialized plates.

On the honor, Martha says, “I never thought I’d have a license plate for my grandson.”

Hers reads, "GMAW," short for Grandma. Jackson’s reads "MOMA" and Elledge’s "1SIS."

It was a charity that got the Earnhardt family involved in this effort. Part of the proceeds from the sale of the plates goes to the North Carolina Motorsports Foundation, which then funds programs and scholarships for students who want to work in the industry.

Jackson hopes NASCAR fans get behind the effort, saying, “The whole thing is a win, win situation. You’ve got a nice looking tag that you can put your mark on and help a lot of kids out. So, I’m very excited about it.”

The special plates add $30 to your yearly registration fee -- more if you want them personalized. Of that, $20 is sent to the foundation.

In all, there are 25 drivers to choose from. The plates are on sale now through the state DMV website at www.ncdot.org/dmv.