Certainly glad you're ok!
A lot of people forget that tires are the ONLY thing between you and your car, and the ground. Keeping 'em inflated and having good tread on four identical tires gives you the best safety and assurance. I've dealt with the same thing before, although not in the middle of a highway, out of my own ignorance. Gotta watch what brand of tire you get.
Tires like General, Federal, and such unknown brand are not as well developed at the factory than other brands like Michelin where they have the technology to develop much more advanced tires.
I like to buy tires that have recently been released for sale.
A lot of it is common sense too.