luckily the tire blew right before an exit, so we were able to drive a couple hundred meters off the I5, and do the repairs in a parking lot. so we didnt have to sit on the side of the highway and work on it.
and yes geoff, the expansion joints were alot nicer to me and my car on the way home. it helps to know about them, and where there are aswell! just made for a good scare when i did not know about them, and it felt like all 4 tires were flat!