In Skyscanner searches we use the concepts of create and poll within our endpoints. This is due to the amount of data that we need to gather for a full search. The latency for getting travel information from our supplier APIs can vary. To minimise the time to the first result, we provide partial results until all the supplier information was loaded.
To enable these partial results, you will need to create a search session and then keep polling it until all the results loaded. Sometimes, the best prices come from slower partners, so it is always best to wait for all the results to come back. It's expected to take between 1 to 10 seconds to get the full set of results for a given Car Hire search.