don't like the idea of pumping stuff into the tires. repairing them afterwards would be a challenge.
Even with AAA or towing service, you're still out of a car when its been towed back home. Busted tires = no ride = no work = must take PTO. I still need a spare tire so if anything does happen, I can still drive the car to work on the spare. Order the tire online or bring it to a tire shop to get it replaced.