Historical clue formulations

• Drag racing vehicles — 2020-08-09
• Street racers — 2019-04-19
• Greasers' loves — 2018-07-14
• They have souped-up engines — 2017-06-08
• Speedsters — 2016-12-31
• Dragsters — 2015-11-18
• Dangers on the highway — 2006-08-02
• Some racers — 2000-02-06