[THE MORE YOU KNOW WITH ANTAWIRYA]
Many people said that cars should be warmed up in the morning before driving out. This would prevent failures in the engine piston.
But, it turns out that warming up cars before driving is just a myth and not true. Cars nowadays are featured with the electronic fuel injection system which uses sensors to supply fuel to the engine and get the right air and fuel mix. This system has a sensor that would automatically adjust the engine to the temperature conditions. So, warming up cars would just be a wasting fuel behavior.