Personal cars sit parked about 95% of the time, according to a study by the RAC Foundation. And they take up valuable real estate in urban areas. Roads and parking occupy nearly a quarter of Manhattan, for example, while only 22% of households in the borough owns a car, according to census data.
https://www.cnbc.com/2022/09/09/why-car-free-cities-could-be-the-future.html