Sniffles

So I worked overnight and got home this morning and noticed a huge puddle of leak on my garage floor. At the same time, I noticed my car was overheating. I checked the fluid on the floor and it was my coolant. Dropped my car off this morning at the dealer and turned out that the radiator cracked from a rock hitting the bottom of it. My friend also told me that I was so lucky that the coolant didn't leak into the transmission or else it would have been a whole new problem. Probably would never happen to anyone on here but just a heads up...don't ignore the noise when a rock hits your car from the bottom!