SWIFT 4, Xcode 9, JSON DECODER - json

Question

I'm pretty stuck now. I'm attempting to PARS a JSON RETURN for just the year make make and model. It's buried in an array of dictionaries, and the decoder is having a hard time pulling them out. What am I doing wrong?
public struct Page: Decodable {
let Count: Int
let Message: String
let SearchCriteria: String
let Results: [car]}
public struct car: Decodable {
let ModelYear: String
let Make: String
let Model: String
let VIN: String}
let session = URLSession.shared
let components = NSURLComponents()
components.scheme = "https"
components.host = "vpic.nhtsa.dot.gov"
components.path = "/api/vehicles/decodevinvaluesextended/\(VIN)"
components.queryItems = [NSURLQueryItem]() as [URLQueryItem]
let queryItem1 = NSURLQueryItem(name: "Format", value: "json")
components.queryItems!.append(queryItem1 as URLQueryItem)
print(components.url!)
let task = session.dataTask(with: components.url!, completionHandler: {(data, response, error) in
guard let data = data else { return }
do
{
//let Result = try JSONDecoder().decode(Page.self, from: data)
// let PageResult = try JSONDecoder().decode(Page.self, from: data)
let json = try JSONDecoder().decode(Page.self, from: data)
let Results = json.Results;
print(Results)

Answer 1

First of all it's highly recommended to conform to the Swift naming convention that variable names start with a lowercase and structs start with a capital letter
public struct Page: Decodable {
private enum CodingKeys : String, CodingKey {
case count = "Count", message = "Message", searchCriteria = "SearchCriteria", cars = "Results"
}
let count: Int
let message: String
let searchCriteria: String
let cars: [Car]
}
public struct Car: Decodable {
private enum CodingKeys : String, CodingKey {
case modelYear = "ModelYear", make = "Make", model = "Model", VIN
}
let modelYear: String
let make: String
let model: String
let VIN: String
}
The cars array is in the variable result. This code prints all values
let result = try JSONDecoder().decode(Page.self, from: data)
for car in result.cars {
print("Make: \(car.make), model: \(car.model), year: \(car.modelYear), VIN: \(car.VIN)")
}