What was the highest grid for Patrick Carpentier?
CREATE TABLE table_8638 (
    "Driver" text,
    "Team" text,
    "Laps" real,
    "Time/Retired" text,
    "Grid" real,
    "Points" real
)
SELECT MAX("Grid") FROM table_8638 WHERE "Driver" = 'patrick carpentier'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What was the highest grid for Patrick Carpentier? ### Input: CREATE TABLE table_8638 (
    "Driver" text,
    "Team" text,
    "Laps" real,
    "Time/Retired" text,
    "Grid" real,
    "Points" real
) ### Response: SELECT MAX("Grid") FROM table_8638 WHERE "Driver" = 'patrick carpentier'