NASCAR on Friday confiscated the front windshields on three Sprint Cup Series teams fielded by Michael Waltrip Racing - the No. 00 driven by David Reutimann, the No. 47 driven by Bobby Labonte and the No. 56 driven by Martin Truex Jr.
The windshields were taken for having unapproved modifications and were on display Friday outside the Cup series hauler.
NASCAR spokesman Kerry Tharp said additional penalties were expected and will be announced next week.