These guys have their robots.txt file all wrong, which is likely what happened here.
https://www.fordblueadvantage.com/robots.txt
[URL unfurl="true"]https://www.autotrader.com/robots.txt[/URL]
1. They copied the robots.txt file from AutoTrader.com
2. It tells Indexing robots that the sitemap is on autotrader.com
They're basically telling Google not to index this site and to index autotrader.com instead.
[CODE=bash]Sitemap: https://www.autotrader.com/sitemap.xml
Sitemap: https://www.autotrader.com/sitemap_certified_geo.xml.gz
Sitemap: https://www.autotrader.com/sitemap_new_geo.xml.gz
Sitemap: https://www.autotrader.com/sitemap_used_geo.xml.gz
Sitemap: https://www.autotrader.com/sitemap_dlr.xml.gz
Sitemap: https://www.autotrader.com/sitemap_mm.xml.gz
Sitemap: https://www.autotrader.com/sitemap_mmt.xml.gz
Sitemap: https://www.autotrader.com/sitemap_mmty.xml.gz
Sitemap: https://www.autotrader.com/index.php?sitemap=1[/CODE]