Forgot my keys

This is an advanced dare. Go by car to a park of your choice and park your car, but don't lock the door.
Go to a distance of at least 200 meters and find a place to hide your keys. Once your keys are hidden, go back to your car.
undress as much as you like and then get out of the car and lock the door. Now all you have to do is to go get your keys and come back to the car to get dressed...