Darrell Wallace Jr.
From Pixar Cars Wiki
Darrell Wallace Jr. (born October 8, 1993), also known as Bubba Wallace, is an American professional stock car racing driver. He currently competes part time Monster Energy NASCAR Cup Series replaceing Aric Almirola injured in crash driving No 43 ford. full-time in the NASCAR Xfinity Series, driving the No. 6 Ford Mustang for Roush Fenway Racing.[1] Previously Wallace was signed as a development driver for Joe Gibbs Racing where Wallace competed in the Camping World Truck Series, driving the No. 54 Toyota Tundra for Kyle Busch Motorsports.
He is set to voice Bubba Wheelhouse, Jr. in Cars 3.