I was driving along when I smelled coolant then 2 seconds later my windshield started to fog then the coolant light. I pulled over right away popped the hood and I could see coolant pouring out near the firewall, a little bit to the passanger side of center. It was to dark to see exactly where but it was pouring. I first thought heater core but last time I blew one the inside of my car got soaked too but not this time. I don't have access to a haynes manual right now so I need some help. What else it could be besides the heater core? The car has been fine for months and then 15L of coolant gone in about a minute. Figures this crap always happens to me right before a holiday when shops and parts stores are closed.

thanks.