The pair had just left a Mike Tyson fight held at the MGM Grand, when the 25-year-old rapper was shot as he stood up through the sunroof to talk to a group of women while the car was stopped at a traffic light.
Shakur was hit four times - twice in the chest, once in the arm, and once in the leg.
He eventually died six days later on September 13.
Bond believes Suge, who is behind bars awaiting a separate murder trial, is ready to make a statement about Tupac's murder because it proves that he has been a target of gangs out to get him for years.
Suge, who was shot multiple times in 2014, has been in jail since his arrest for mowing down two men in a burger stand parking lot in Compton in 2015, killing businessman and friend Terry Carter and injuring Cle 'Bone' Sloan.
The two men had been working as security on the location set for the NWA movie Straight Outta Compton and had got into a dispute with Knight earlier in the day.
Prosecutors have charged Knight with murder and attempted murder. He has pleaded not guilty and claims he accidentally struck Carter as he fled the scene in fear for his life suspecting an armed ambush.
Bond and Carlin insist Knight was a victim in Vegas, which could be evidence of his that he was also telling the truth about his 2014 shooting at One Oak and in the Compton case he is only trial for.
'The hope is Knight's confirmation of the story laid out in Compton (the film) may put a final stamp to close this mystery, after 20 years.'
New of the potential break through in the now decades-old case, come as Tupac is due to be posthumously inducted into the Rock and Roll Hall of Fame on Friday.
The Harlem-born rapper's recording career may have only lasted five years before he was murdered, but it is the rapper's influence from beyond the grave that will be celebrated.
Arguably bigger in death than he was in life, Shakur will be only the sixth rap act to be voted into the Hall of Fame in its 30-year history.
The Hall of Fame described him as 'an international symbol of resistance and outlaw spirit, an irresistible contradiction, a definitive rap anti-hero.
Shakur has sold 75 million albums, mostly from seven posthumous releases, and although his sales figures will never match those of 21st century hip hop kings like Drake, Kanye West and The Weeknd, his influence remains profound.
'For anyone who is serious about learning about hip hop, there are certain people whose music you have to deal with and Tupac is one of those people. You can't say you are knowledgeable about hip hop if you don't know about Tupac,' said Todd Boyd, professor of cinema and media studies at the University of Southern