user: ### NOW ANSWER:
Question: Which Pos has a Car # smaller than 18, and a Driver of Mike Skinner?
Columns: ['Pos.', 'Car #', 'Driver', 'Make', 'Team']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 33.0, 'Ron Hornaday', 'Chevrolet', 'Kevin Harvick Incorporated']
SQL:

assistant: SELECT AVG("Pos.") FROM "Table" WHERE "Car #" < 18.0 AND "Driver" = 'Mike Skinner';