SELECT "Average Speed (mph)" FROM table_21882 WHERE "Driver" = 'Tony Kanaan'
When tony kanaan is the driver what is the average speed miles per hour?
CREATE TABLE table_21882 (
    "Season" text,
    "Date" text,
    "Driver" text,
    "Team" text,
    "Chassis" text,
    "Engine" text,
    "Laps" text,
    "Miles (km)" text,
    "Race Time" text,
    "Average Speed (mph)" text,
    "Report" text
)