billy, did you check out the hoses above and around the car ? check underneath all of them .? get some white tissue wrapped around your hand, and pat and wipe all hoses under and along their lengths. pay particular attention to any jubilee clips or other spring type clips for leaks and nip them up. The clips under the expansion tank are a common one to drip, being lifted up during coolant change. unbolt it at the top and lift it and check. the hoses on the stat at the side of the vee can leek if the old spring type clips are re used. im not convinced that this is a crack or similar but of course , i may be wrong. is your driveway on an incline ? this could give you a totally different area of source to where it is appearing. the coolant could be travelling quite a way from its source along hoses. im afraid you will have too spend an hour or so and do some investigating. ..
