Meanwhile, he and his team, Richard Petty Motorsports, are preparing to race a car Wednesday emblazoned with "#BlackLivesMatter."

The paint scheme for Wallace's No. 43 Chevrolet is set to be black, unlike its look in recent races, with an image on the hood of a black hand clasping a white one in solidarity. The front and rear of the car will feature the words "Compassion, Love, Understanding." In a video his team posted Tuesday, Wallace said, "I'm excited for this opportunity to run #BlackLivesMatter on the car for Martinsville," referring to the track in southern Virginia hosting the next evening's 263-mile Cup Series race.

"This statement that we have right here that we're about to make - running this racecar, being on live television on Fox - I think it's going to speak volumes for what I stand for," the 26-year-old added, "but also what the initiative that NASCAR, the whole sport, is trying to push."