Discovered while attending the S*W*A*G mega event in Yuma, AZ.
With my son (stash_n_cache).
Some were trackable shared at the event - many others were spotted on
vehicles while walking around the various parking lots used by those
attending.
This was one of the shared trackables.
Can't say for certain if they were there for the event - but I did spot one car
with an Alaska license plate. Also spotted license plates from Ohio and
Florida.