Historical clue formulations

• General Motors subsidiary — 2025-10-15
• Amenity in G.M. vehicles — 2021-11-28
• Automotive amenity that offers an annual Santa Tracker — 2021-11-05
• Amenity in G.M. vehicles — 2020-11-01
• G.M. navigation system — 2016-07-06
• Amenity in a G.M. vehicle — 2014-11-23
• G.M. option — 2014-04-24
• Big name in car monitors — 2013-08-30
• General Motors subsidiary — 2012-02-26
• G.M. system with a "Virtual Advisor" — 2010-11-06
• G.M. tracking system — 2010-03-28