Im convinced the young woman wouldnt even have known.; He couldnt say for sure

Interesting errors from "Projectile road debris kills driver" on Yahoo! Canada News on July 7, 2010. The first two errors are missing apostrophes in both I'm and wouldn't in the above sentence. Then, two sentences later,
there is a missing apostrophe in couldn't. There are no apostrophes in the article, but there should be three apostrophes in the article.