She says that Moore instead parked the auto and sexually assaulted her.
"Roy Moore accuser Beverly Young Nelson now admits she doctored the yearbook note".
In a separate press conference late Friday afternoon in Montgomery, Ala., Moore's attorney Phillip Jauregui referenced Nelson's November 13 news conference where he said Allred and Nelson had said "everything written in that yearbook was written by Judge Moore".
What do you think of Roy Moore?
Beverly Young Nelson holds her high school yearbook signed by Roy Moore.
"He did sign it", she replied. ABC's Tom Llamas asked during the interview aired today.
The inscription reads, "To a sweeter more attractive girl I could not say, 'Merry Christmas.'" It is followed by the signature "Roy Moore D.A." and the notation "12-22-77 Olde Hickory House".
Several Moore supporters have claimed that Ms Nelson may have committed fraud.
Did the accuser admit to forging either "part of an inscription" or Roy Moore's "signature"?
Allred said she retained forensic handwriting expert Arthur Anthony to examine the inscription by comparing Moore's "known standard handwriting and signature to the entry in Beverly's yearbook". Her new admission about date and place, however, isn't playing well online. "And it demonstrates that when Roy Moore stated 'I do not know any of these women, ' that statement does not appear to be true".
For the Moore campaign, which has been working to raise doubts about multiple accusations that he made sexual advances toward teenage girls when he was in his 30s, the Allred announcement was greeted as a political gift, and the campaign worked to suggest that more falsehoods would be revealed, without describing them specifically.
Nelson tells a different story.
Allred did not say when Nelson wrote the additional words into the yearbook. Moore has denied all accusations of wrongdoing, and is polling ahead of Democrat Doug Jones before the December 12 special election to fill Alabama's second seat in the US Senate.
US president Donald Trump endorsed unusual over Moore during the GOP primary earlier this year, but has endorsed Moore in the general election despite the allegations against him.
President Trump officially endorsed Moore on Monday and will attend a campaign rally Friday night in Pensacola, Fla., about 20 miles from the Alabama border.