The 31-year-old had been due to take on the unbeaten Ronnie Heffron in Manchester in October but those plans have been shelved after Barnes was lucky to escape with his life.
The smash happened on Tuesday night with Barnes apparently being thrown through the front windscreen.
However, the early indications suggest the Manchester brawler has suffered no major injuries.
"Barnes has multiple cuts & muscle damage to arms and legs. Obviously shook up but nothing too serious luckily," said promoter Dave Coldwell on Twitter.
Barnes appeared to have the world at his feet after winning the Lonsdale belt outright in 2004, but a stoppage loss to Joshua Okine in a Commonwealth title fight halted the momentum.
He dropped down to light-welterweight to win the British title in 2008 but he has only fought twice since losing to Colin Lynes in Prizefighter the following year.
The October 12 in Manchester show will now be headlined by Matthew Hatton's return to action against former Prizefighter champion Michael Lomax.