This a hundred times. Years ago, on a hot summer day, my girlfriend and I were stranded on the highway after a big truck overturned blocking the entire driveway. We were on my then motorcycle, but couldn't drive in any directions as the next exit was way beyond the overturned truck and it was blocked cars everywhere. We were extremely lucky I brought a couple frozen water plastic bottles in the bags, so although we had to wait until dark (6-7 hours) before they could eventually free the highway, we never went out of water. Since that episode, I always took at least one plastic bottle of frozen water when doing motorcycle trips.

Some other things to keep in mind regarding any phones in your group if you end up stranded:

If you're in an emergency and your phone says you have no signal, call 911 anyway. It'll attempt to reach any network in range that the phone is compatible with, not just the network you're subscribed to. Some phones nowadays will show "Emergency calls only" when this is the case, but it doesn't appear to be 100% consistent, so again, call anyway.

Also turn on battery saver and when you're not actively trying to call, keep the phone in airplane mode. If you don't it'll repeatedly try to reach a tower which will drain your battery quickly. Don't power it off unless you don't plan to use it for the rest of the day, because booting up uses a lot of energy.