system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are we able to back into tight parallel parking spaces but not able to pull straight forward into them?
gpt
The wheels on the front of your car pivot, but the wheels on the back of your car don't. You need the set of wheels that pivot to remain outside the parking space so they can guide the nose of the car into the spot after they've put the rear in. If you drove straight in, you wouldn't be able to get the rear of the car in the spot.