My car recently would heat up extremely quickly and begin smoking, the reservoir for coolant was low so I refilled(was accidentally overfilled). That did not help so I refilled the radiator itself with coolant. That also had no observable effect. I noticed while refilling that it would leak from under the car the color of the coolant. I let it sit for a day to see if it was a continuous leak and if it would be empty the next day. The next day I didn't notice any indication it had leaked (possible since it's been raining) beneath the car and saw no active leaking. Reservoir was still filled (overfilled). I added some water to the radiator to see what would happen, and it again began leaking coolant (not water) from the bottom of the car again.
Also if the solution requires purchasing something is it safe to use to drive to the store (3 or 4 miles) to get the supplies and just keep dumping water on the engine to make sure it doesn't warm up?
Thank you for reading!