Continuity Error! - Used Car Sign

I discovered I had made a huge mistake. In the drive by shot there is no used car sign however in the still shot, the pivotal moment when the main character spots the 'used car sign', it suddenly appears out of thin air!

THIS IS THE DRIVE BY SHOT.

THIS IS THE STILL SHOT.


















I think it is too late to change now. I will speak to my teacher about picking up on some of the shots, which is one advantage to having my location close by.