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: "GMC Terradyne was first unveiled to the public in an annual auto show held at which city ?" whose answer is Detroit, Michigan.
Each document should contain about 30 words, and these documents should contain useful information.

Query: GMC Terradyne first unveiled to public
Useful Output:

Doc 1: The concept will be officially unveiled at the Detroit auto show in January. "Terra4 builds upon the capability GMC has already established with the Terradyne
Doc 2: Concept Car of the Week: GMC Terradyne. 13 October 2017By Karl Smith. The Terradyne was General Motors' turn-of-the-millennium vision of the urbanised future
Doc 3: GMC Terradyne: This full-size pickup has a “mega cab” that seats five adults and a short cargo box. It's a job-site workhorse that serves as a family
Doc 4: GM's all-truck division is looking for ways to distinguish its products from Chevrolet's, and the sharply chiseled Terradyne does it in spades.
Doc 5: GMC Terradyne. First Seen: 2000 Detroit Auto Show. Description: Heavy-duty pickup truck concept. Sales Pitch: “Terradyne features size