Yeast on a roadtrip

I was just wondering if I should be concerned about moving some liquid yeast cross state. Would a cooler be sufficient in keeping the boys happy for about 6 hours? Also, in the instance where I won't have a cooler (bus ride back to school), will the yeast be okay exposed to 70-90 degree temps for a couple hours?

I need to get my homebrew operation up and running again! I'll order online if the yeast is going to have problems with the trip, but I'm a poor college student who doesn't like shipping fees haha.

Thanks!

A cooler will be perfect. Contrary to popular belief, yeast isn't that easy to kill. Even a couple hours at 90 degrees will be fine. I left mine in my car at about 100F for a few hours by accident once. It made it.