user: Question: What was the highest amount of laps when the class was V8 and the entrant was Diet-Coke Racing?
Columns: ['Pos.', 'Class', 'Entrant', 'Drivers', 'Laps']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['1', 'V8', 'Shell FAI Racing', 'Dick Johnson John Bowe', 161.0]
SQL:

assistant: SELECT MAX("Laps") FROM "Table" WHERE "Class" = 'V8' AND "Entrant" = 'Diet-Coke Racing';