This could be the reason. The collection is merely a book of which cars have been acquired, but don't reflect your current garage.If it's showing up in your collection but not your garage, it means you had one at one point and got rid of it.
Thanks Mike. That makes sense. When the new GT7 update came out that allowed you to sell vehicles I may have sold the VeyronIf it's showing up in your collection but not your garage, it means you had one at one point and got rid of it.