A promising race at Road America held a disappointing end for both Cape drivers.
Michael battled a flat spotted tire all afternoon, which hurt even more during a late restart. He ended the day in 11th.
Salvador raced hard for half the race, then electrical issues returned and forced him to retire.
d'Orlando - P11
de Alba - P21
Next stop on the calendar: A Laguna Seca double-header June 22-23.
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