URGENT!!! Auto. tranny has serious leak:(

After I parked my car this afternoon, some people drew to my attention the 1km trail of tranny fluid I left behind my car as I was coming into the parking lot at the airport. I jacked it up, and started it for a bit(the tranny is almost out of fluid), as a friend looked underneath to try and see where it was leaking from. We got a VERY steady stream of fluid coming out the bottom driver side of the tranny. I don’t know if the internal seals are gone, or what is happening, but it looks like it’s leaking out some relief holes or somehting.:sad: Maybe this will mean a tranny swap…
Anyway, can anyone help me?? I have no idea what do do. Right now, my car is stuck out at the airport, 80km away from home:tsk:
Thanks