All recordings of the unlock vids on YouTube look to be recorded from in-game, which means they have the blue-ish grid over the top and the bars on top and bottom. Here's all of them ripped directly from the disc at their original, crispy, spicy resolutions and aspect ratios. Enjoy!

0:00 Compact
0:17 Coupe
0:33 Muscle
0:50 Sports
1:08 Super