 The last run started in Anaheim CA on April 2, 1968 but was cancelled in Indianapolis on April 5 due to civil unrest across the country because of the death of Martin Luther King Jr. on April 4.In December 1968, it was announced by Richard F Tucker, vice president of marketing for Mobil in North America, the event will be cancelled in the United States citing "changing advertising patterns and changing emphasis in automotive performance as major factors influencing the decision.