Q: Ran car with no oil, car stopped on hwy what to do now?

Hello There, Unfortunately, it sounds like your car may have had some catastrophic damage due to running it without any oil. Depending on how long and how low the oil levels were when you drove it prior to it shutting down, this may have done some damage to at the very minimum main and rod bearings and potentially other components in the valve train as well. You will need to have this inspected by a qualified mechanic such as one from YourMechanic to further verify what kind of damage has been done.