How long are they supposed to search?
The question isn't how long they searched, the question is how effective was their search. I'll state again, my point is that it would seem the police erred in not conducting a thorough search of the vehicle. However, it would be interesting to learn whether or not the police were even authorized to search the trunk.
how long would you want them to search for your missing child?
It's obvious you are not exactly civic minded or logical.