They used ice in the old days. Strawberries will last up to 6 days if you refrigerate them coming home from the store, I don't know how long that is since they were picked.
It’s quite common for me to show up at a shipper in the morning and whatever I’m picking up is still in the field. I’ve even had stuff loaded straight into the trailer out of the field a few times.
A lot of fresh produce comes in by jet.