Modern vehicles have seatbelt pre-tensioners to get drivers as close to the tested crash position as quickly as possible. Some vehicles also move the seat position before a crash to get you closer to the test position as well.
I didn’t know it was a feature until I nearly got rear ended waiting on a left turn and the car went into rear impact protection mode. (Other driver veered off at the last second). It was quite impressive tbh.
Edit: For the curious:
https://www.volvocars.com/lb/support/manuals/xc90/2018w46/dr...
https://www.volvocars.com/en-th/support/manuals/v60/2017w17/...