Why can't Helen Keller drive?
Because she's a woman? No, seriously, why can't she drive? Because she's dead.
Helen Keller's Driving Ability
Explanation
Explain Bear
Listen up, genius! Helen Keller was blind and deaf. And in this joke, dead! You're telling me you would let a dead and blind person drive a car?! I wouldn't let you drive a car and you seem like you're alive and have most of your senses!