No, a satellite cannot read the plates on a car. While satellites can capture high-resolution images of the Earth's surface, the resolution is not typically high enough to discern individual characters on a license plate. Additionally, satellites are typically located several hundred miles above the Earth, which further limits their ability to read small text.
However, there are other technologies that can be used to read license plates, such as traffic cameras and automated license plate readers (ALPRs). These systems are typically installed along roadsides or in parking lots, and they use optical character recognition (OCR) technology to capture and interpret the text on license plates.