If you look at the 'marquee' sticker, you can see that the adhesive has, over time, 'soaked' through the sticker, giving it a blotchy, grease stained appearance. This is true on all the stickers.
I've actually already used Illustrator to redraw all the stickers to scale. The original artwork is slightly modified from the original cab art, but I used the originals for the new stickers. It's not a pressing issue, but just something I was considering toying around with.