You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "when is the first smog check required in california?" whose answer is every two years.
Each document should contain about 30 words, and these documents should contain useful information.

Query: first smog check required in california
Useful Output:

Doc 1: Yes. When a car is newly registered in California, a smog check is required to complete the registration process.
Doc 2: California - To determine the first year most vehicles require a biennial Smog Check, add eight to the model year of a vehicle. For example
Doc 3: The regulation mainly covers all cars and light-duty trucks. California requires gasoline-powered vehicles, model-year 1976 and newer, to have a
Doc 4: The new CA smog test requirements for 2025 are reshaping the landscape for vehicle owners and repair professionals alike.
Doc 5: The California smog check program started in 1984 to reduce air pollution. The state keeps track of each vehicle's smog test history. This history is a big part