Dale Earnhardt Jr. trades stage racing for Styrofoam chaos in his laugh-out-loud debut as Red Bull Soapbox Race co-host.

Christian Horner entered Formula 1 as its youngest team principal in 2005 and developed Red Bull from a “party team” to a serial title winner.

Longtime Red Bull team principal Christian Horner was fired on Wednesday after a 20-year stint that included eight Formula 1 drivers' titles and a rise ...