Guy probably was putting air in it and got text.
Lots of things could of happened with the tire, could of hit something weakening the liners, could of been defect that took that long to fail, could had way too much air pressure, got hot and failed. I'd guess and say 90 % of all tire blowout are due to under inflation! people just don't check air pressure in ther tires. I check tire pressure once month or it if looks low. winter temp changes will cause tires to lose small amount air pressure over time.
If the tires are hot the pressure will be higher. But, shouldn't be over say 3 or 4 pounds from room temps. so your tires was way over inflated,the got hot from driving which caused even more pressure and the tire failed. Again another reason to check work done by someone else.