When I have been driving and I turn the car off, it is leaking anti-freeze after about 3-4 minutes. This is happening on the driver's side, running down off of the exhaust pipe and drips off the driver's side tailpipe. It makes a big pool of anti-freeze before it stops dripping - until I drive it again. I can't find any indication that it is leaking while I am driving, as well. All help is appreciated.

 

Your coolant tank is cracked. Very common failure.