10 year old tires ok for highway driving?

oh i found this... may help if anyone has the same question as me.
http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=11

Thanks to this link, I found out that 2 of the tires on my truck were made in '05, one in '03, and one in (yikes) '96. So guess what happened today?






I was only going about 35 or 40, no damage or injuries- but it did throw my afternoon schedule right in the toilet.