Please choose the correct ending to complete the given sentence: Cars & Other Vehicles: [header] How to adjust seating to the proper position while driving [title] Slide your seat until your knees are slightly bent when you're pressing the gas. [step] Move your seat forward if your legs are completely extended when you press the gas pedal. Move your seat back if your legs are bent too much.

Ending1: [title] Move your seat in the opposite direction the airbags are intended to go. [step] Do this in the direction that the airbags are intended to go before the stop signs have been passed. Ending2: [title] Tighten your seat before pressing the gas pedal. [step] To press the gas pedal, tighten your seat only as close to the floor as is appropriate. Ending3: [title] Wait until you are fully seated before pressing the gas pedal. [step] To start the vehicle, shift forward slowly into starting position with the handbrake a few inches from the floor and the engine on. Ending4: Keeping your knees slightly bent while you drive will prevent knee pain. [title] Sit so there's a gap 2 fingers wide between the back of your knee and the seat.

Answer format: ending1/ending2/ending3/ending4