Jonny Adam and Dudu Barrichello will spearhead Heart of Racing's LMGT3 in the World Endurance Championship this year.

A violent fight broke out between two drivers toward the end of a 500-mile Brazilian karting race on Saturday, when a teammate of Felipe Massa tried to pummel a competitor after a crash into the tire barrier.Rodrigo Dantas, who was driving for Massa's team, and Tuka Rocha were battling for...