A police car escorts the Freedom 250 race car in front of the Lincoln Memorial. (photo White House viaI.M. Pei skylights and an outdoor Alexander Calder sculpture are among the structures that have been boarded up ahead of this month’s race. An IndyCar race taking place in the nation’s capital later this month as part of President Trump's “Freedom 250” celebrations is under scrutiny as experts study the possible impact of race car vibrations on thousands of artworks held in museum collections near the track. (Penske Corporation is owned by Republican donor Roger Penske, who is the father of Jay Penske, founder of Penske Media Corporation.)