Could be the water pump went out.
If the car overheated, you may have warped the aluminum head. You may have to have the head shaved and a new head gasket put in.
Head Gasket blown, plus check your water pump.
First, do not run engine. Second, determine where the coolant has leaked from. Third, consult a mechanic with your findings.
Could be overheated coolant or just leaked oil burning off your exhaust headers
It will be safe to drive short distance as long as the car does not over heat. You can top up the engine coolant or use water/coolant mixture till you fix the problem which could be leaking hose pipe. leaking radiator or faulty radiator cap
The small pipe which goes to the radiator is most likely carrying the fluid from the auto box to the cooler and if the fluid has all leaked out , there will be no drive .
Because it leaked out, or was absorbed as the new radiator filled its voids. Just top it off, and observe during and after an engine thermal cycle, and top off as necessary until proper range is reached. Notice that the reservoir has "hot" and "cold" levels.
you have a blown headgasket, or if it is has an automatic transmission, it is also possible that you may have transmission fluid in your radiator. this is caused by transmission fluid in part of your radiator leaked into your coolant
Coolant may have leaked into an electrical connection while disconnecting the hoses. Check the sensors located on the front of the engine and make sure that all electrical connections are dry.
It's probably a warped head & head gasket, or possibly a cracked head or block. But you probably have the sequence wrong. In most cases the engine overheated THEN cracked and you got coolant into the engine. That indeed is a possibility but burbs are notorious for having a leaking intake manifold gasket that would be the place to start you'll get there before you get the heads off anyway.
Rear main cam seal
It could be a lack of enough water in the radiator, or it might be a faulty thermostat. Your radiator might also be going bad. if there is no leak on your driveway, there still could be a problem. mine only leaked when the engine was running and the fan was blowing the coolant onto the block and evaporating it. Check both things out