Character mistake: Namibia was said to be in West Africa. Namibia is in Southern Africa.
Continuity mistake: When Vivian arrives with Hotrod at Lord Burton's castle, she is wearing black tennis shoes. When she is inside examining all the artifacts, she has black heels. She was not carrying any shoes, and even if they were in Hotrod's trunk, they would have been crushed during the transformation.
Answer: The constantly shifting aspect ratios are due to the fact that Michael Bay shot the film with several different camera types. Most directors who use multiple types of camera find a way to hide the shifts a little better, but Bay appears to have been unconcerned with this issue. There are several scenes where the aspect ratio changes from shot to shot. The aspect ratio shifts were also present in the theatrical release, and were a major source of ridicule then, but they are arguably more noticeable on a smaller screen.
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