Hopefully i can help..
Yes thats quite normal to see when the Air con has been used - Its pretty much condensed water,water the aircon has taken out of the air and thus drains off.there is a small drain pipe under the car from the ac evaporator/condenser.and at times you will see this drain off from time to time when in use or when the car has been parked up mostly is when you see this..So nothing to worry about.As long as its not coolant! - then like i say totally normal to see.I do hope this helps
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