Apparatus, methods, and systems for displacing one or more vehicle seats in a rearward direction during an impact event to increase the space between the occupant's knees/legs and an instrument panel and/or firewall, prior to the intrusion caused by the impact. In some embodiments, the system may comprise a vehicle seat and a displacement system configured to automatically displace the vehicle seat upon detecting a foot well intruding impact event within a vehicle. The displacement system may comprise a seat rail mechanism coupled with the vehicle seat and a pyrotechnic device configured to displace the vehicle seat on the seat rail mechanism upon actuation of the pyrotechnic device.