An airbag system includes an airbag. The airbag system includes a base defining a track extending from a first end to a second end. The airbag system includes a carrier releasably fixed to the base and removable from the base at the second end. The airbag system includes a tether extending from the carrier and secured to the airbag. The airbag system includes a spring disposed at the first end. The spring is disposed between the carrier and the base. Upon application of a force to the carrier, e.g., via the tether when the airbag is inflated, the carrier is released from the base and compresses the spring. Upon removal of the force, the spring urges the carrier toward the second end where the carrier is ejected.