Would you want to get into a cab where the driver had his last health checkup 30 years ago? (especially eyesight) Here, it is not sufficient for a driver just

Would you want to get into a cab where the driver had his last health checkup 30 years ago? (especially eyesight) Here, it is not sufficient for a driver just to believe he is capable of doing the job, the state requires that he proves his capability and therefore guarantees every passenger that he is capable.