Summer Olympics track and field events in Los Angeles

The video covers various Olympic events, highlighting new world records. It starts with a javelin throw record by Yarvin of Finland, followed by the women's 80 meter hurdles where a new world record is set. The pole vault event sees William Miller of the USA breaking the record. Finally, the 400 meter run concludes with another world record by Bell Car of the USA.

Describe the final moments of the 400 meter run final.

What was the new world record time for the 400 meter run final?