Complex sentence: The 1990 SCCA Escort World Challenge season was the inaugural season of the Sports Car Club of America's World Challenge series under the sprint race format, after changing its name from the Escort Endurance Championship while keeping the corporate sponsor of Escort radar detectors.
Split into simpler sentences: The 1990 SCCA Escort World Challenge season was the inaugural season of the Sports Car Club of America's World Challenge series. The series changed its name from the Escort Endurance Championship while keeping the corporate sponsor of Escort radar detectors.