Write SQL query to solve given problem: What is the percentage of subject who are female used the Vehicle as weapon?. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT CAST(SUM(T1.subject_weapon = 'Vehicle') AS REAL) * 100 / COUNT(T1.case_number) FROM incidents T1 INNER JOIN subjects T2 ON T1.case_number = T2.case_number WHERE T2.gender = 'F'