protected override void ExecuteCore() { var doesAllCarHavePriceGreaterThanZero = Cars.All(x => x.Price > 0); var doesAllCarHavePriceGreaterThanThirty = Cars.All(x => x.Price > 30); Console.Write("\tAre all cars with price greater than 0 - " + doesAllCarHavePriceGreaterThanZero); Console.WriteLine("\n\tAll Cars with price greater than 30 - " + doesAllCarHavePriceGreaterThanThirty); }