Historical clue formulations

• Car roof with removable panels — 2026-04-11
• Roof type with removable panels — 2026-02-04
• Sporty auto feature — 2025-06-11
• Mustang feature, once — 2025-05-08
• Corvette Stingray feature — 2025-04-01
• Sporty auto roof — 2025-03-27
• Sporty car option — 2024-04-27
• Sporty car roof — 2023-08-06
• Feature of many a Corvette — 2023-06-21
• Sporty car roof option — 2022-05-11
• Classic moonroof alternative — 2021-05-01
• Stingray feature, once — 2021-02-27
• Sporty option — 2020-07-19
• Sporty car option — 2020-05-07
• Sporty roof feature — 2020-01-05
• Sporty car roof — 2019-12-25
• Sporty car option — 2019-11-16
• 'Vette option — 2019-07-16
• Corvette Stingray feature — 2019-03-25
• Sporty auto feature — 2019-01-31
• Roof style of some Corvettes — 2018-07-17
• 'Vette option — 2018-07-01
• The Grand Prix used to have one — 2018-04-28
• Pontiac Trans Am option — 2018-04-27
• Corvette feature — 2017-04-20
• Old Trans Am feature — 2016-11-19
• Corvette feature — 2016-10-13
• Sporty car feature — 2016-06-07
• Sporty car roof — 2016-01-31
• Onetime Mustang option — 2016-01-21
• 'Vette choice — 2015-12-27
• Sporty option — 2014-09-21
• Relative of a convertible — 2014-02-09
• Muscle car roof option — 2014-02-05
• 'Vette roof option — 2013-05-22
• Roof with removable panels — 2013-03-14
• Datsun 280ZX option — 2012-10-13
• Sports car option — 2012-10-07
• Mustang option — 2012-07-28
• Muscle car feature — 2011-02-17
• *'Vette option — 2011-01-23
• Sunroof or moonroof alternative — 2010-11-24
• 'Vette roof option — 2009-03-25
• Sports car option — 2008-11-28
• Auto roof option — 2008-09-30
• Sporty car feature — 2008-07-30
• Feature of many a sports car — 2008-05-19
• Sporty car roof option — 2008-02-28
• 'Vette roof option — 2008-02-12
• Sporty auto roof — 2007-06-19