The number of the car Michael Waltrip will drive during Speedweeks at Daytona, as he attempts to qualify for the 55th Daytona 500. The race will mark the debut of Swan Racing and new owner Brandon Davis. Waltrip is bucking long odds in trying to win a race in the No. 30. All told, 985 starts have produced only one victory for the car number – Speedy Thompson’s win in a No. 30 Chrysler at Martinsville in the 42nd race of 1955.