Please choose the correct solution to the question: How to efficiently park in the garage while using as little space as possible

Solution1: With a spotter, pull the car into the garage as close to other objects as possible, and have the spotter tell you when to stop. Hang a tennis ball from the ceiling to touch the rear bumper of the newly parked car. In the future, pull the car in until the bumper hits the tennis ball.

Solution2: With a spotter, pull the car into the garage as close to other objects as possible, and have the spotter tell you when to stop. Hang a tennis ball from the ceiling to touch the windshield of the newly parked car. In the future, pull the car in until the windshield hits the tennis ball.

Answer format: solution1/solution2