Well known brand names of tire makers are deliberately misspelled. Although the fonts look like from the tire makers you can see "Firestom" or "Good Yard" on the race cars.
Some of the stock footage of the final race was of a modified race at Martinsville Speedway in Martinsville, Virginia.
The episode title is a pun, either on the American music group "Blood, Sweat & Tears", or on Winston Churchill's famous phrase "Blood, toil, tears and sweat".