What to record when a GTA VI vehicle finally turns up
When you fill out a garage record, put the vehicle name, region and source of the sighting at the top. Then note what you were doing. Story progress, an active mission or an edition bonus can matter when somebody tries to repeat a sighting.
A useful screenshot shows enough of the area for another player to find the spot. If you can revisit it later, record that second visit separately and say which conditions changed.