Just some misc. data on stolen cars and car recovery:
2012 Progressive Insurance press release: "While on average a car was recovered roughly 46% of the time, the state-by-state recovery rate varied greatly. In Washington, the highest state for recovery, cars were recovered 71% of the time. In Michigan, the lowest state for recovery, cars were recovered just 19% of the time." Could not locate Idaho specific data.
Statistia shows a national average of 56.4% recovery rate for locally stolen cars in 2020, and
Idaho had the 4th lowest stolen vehicle rate of all states in 2020.
Edit:
Another
report touches on analysis of the correlation between finding the vehicle and making an arrest: "Overall, we didn't find a very strong correlation between the likelihood of a car recovery and an arrest. This suggests that finding the car does not have a strong impact on whether the police are able to apprehend the culprit or vice versa."