sqlite always busy, SQLiteConnectionPool

Here is how I set upp the database. I pass in the connection using DI:

var path = Path.Combine(Path.Combine(ApplicationData.Current.LocalFolder.Path, "mydb.sqlite"));
            var connectionFactory = new Func<SQLiteConnectionWithLock>(() => new SQLiteConnectionWithLock(new SQLitePlatformWinRT(), new SQLiteConnectionString(path, storeDateTimeAsTicks: false)));
            _connection = new SQLiteAsyncConnection(connectionFactory)

The repo that takes the connection in its CTOR:

 private SQLiteAsyncConnection _connection;
    public SqliteRepository(SQLiteAsyncConnection connection)
    {

        _connection = connection;
        _connection.CreateTableAsync<User>();
        _connection.CreateTableAsync<Car>();

    }

And a method to insert a Car:

public async void CreateCar(Car car)
{

   await _connection.InsertAsync(car);
}

When I call CreateCar I always get an exception that Sqlite is Busy. From what I can understand this is because another connection is open. Appearantly I can use something called SQLiteConnectionPool in order to close a connection. Can someone point me in the right direction on how to do this?