Question: During which years did the target of Richard Lawrence's assassination attempt serve as President of the United States?
Sentence (from "Sunshine Special (automobile)"): Initially called "Old 99," in reference to a number on its first license plate, it was later nicknamed the ""Sunshine Special"" (the exact origin of the nickname is unknown, but it was most likely first used in a photo caption) as a reference to its retractable roof, and was famously enjoyed by the president, who had its roof brought down during public gatherings.
Relevant evidence: No