I bought a brand new Subaru Outback in 2002 (it was a 2003 model). within a year after purchase took it to a lube it usa for an oil change. The person doing the work didn't replace the plug or didn't tighten. I went over the pass between Eugene and Bend OR when I saw white smoke behind me. I knew what it was and killed the engine as quick as I could. Was towed to Bend, had a new plug and oil replaced. Drove back to Eugene. The lube it manager paid me for my cost of towing and a motel night stay (the dealer in Bend wasn't open when I arrived). When I asked about long term life of my engine, he said I'd need to sue them to get anything more.
At about year 12 the Subaru was burning oil. I paid to have the head gasket replaced. A few years later year 16 with about 170,000 miles, the head gasket failed again. I replaced the car.
My wife and I were the only drivers of the car and it was very well maintained. One wonders if the death of the vehicle was premature and if so due to driving it without oil earlier in its life. So yeah these problems are kind of crapy because they may impact service life of the vehicle and would be very difficult to prove that was the reason.
And yes, if the dealer is sending a tow truck, absolutely do it that way (as others have said). And yes, it's possible the gas engine has already been damaged if it was operating, and operating without oil. I would do my best to determine exactly what happened if this was my car. Minimally getting as much documentation as you can should related problems come along.
-Dan