The Relocated Vehicles dataset is not updating. We are investigating the cause and a potential solution. In the meantime, we will do occasional manual updates but cannot maintain anything close to the normal 15-minute, automated update frequency.
As a reminder, the City of Chicago also maintains a Vehicle Search site. It is unaffected by the current issue.
We will edit this post with any significant updates and when the problem has been resolved.
Update 8/9/2019, 3:15 pm: We have solved the problem and the dataset is updating on schedule again.