For each car in the US how many parking spaces are there?

There's no single definitive answer to how many parking spaces exist per car in the US. The data is scattered and not centrally tracked. To get an estimate, we'd need to consider several highly variable factors:

* Number of cars: The number of registered vehicles in the US fluctuates.

* Number of parking spaces: This is incredibly difficult to quantify. It includes:

* On-street parking: Varies wildly by city and location.

* Off-street parking: Includes spaces in private lots, garages associated with residences, businesses, shopping malls, and stadiums. Data on the total number of these spaces is not publicly available in a comprehensive way.

* Parking space utilization: Many spaces are empty for significant portions of the day or week. The ratio of spaces to cars actively needing them is not constant.

* Types of parking: Some spaces are designed for specific vehicle types (e.g., handicapped, oversized vehicles), impacting the effective space-to-car ratio.

While various studies attempt to estimate parking space availability in specific areas, a nationwide, accurate figure per car is elusive. You would likely find a wide range of estimates depending on the assumptions made and data sources used, but none would be definitively correct.