Welcome to the forum jdtingen.
It could also be a overlay of metadata from a action camera, some do this kind of stuff on their gopro and other brand camera recordings, or other cameras and then log the metadata on some other device.
Personally while i like the metadata, i wouldn't really like it splattered all over my footage like that, so i just have time/date and then the speed in my footage, even coordinates i leave out.
If i want to see those data i just use a dedicated dashcam player.
Or as mentioned a dashcam APP running on a phone.
If you search on youtube with "race data overlay" some stuff will pop up.
