Answer :
The heat contained in the car was transferred to the car primarily by the process of radiation.
Radiation is the emission of electromagnetic wave energy that originates from a source and travels via a space medium with the speed of light. When it is sunny during the day, all life forms and inanimate objects are exposed to radiation. Since a car has metallic properties, it has the ability to store and contain the heat for a longer period of time through the process known as radiation.
Learn more about radiation here:
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