How to access the methods of a generic ObservableCollection?

public class Car
{
    public ObservableCollection<int> ints = new ObservableCollection<int> { 12, 3, 4, 1, 2 };
    public ObservableCollection<double> doubles = new ObservableCollection<double> {  };
    public ObservableCollection<string> strings = new ObservableCollection<string> { 12, 3, 4, 1, 2 };
    public ObservableCollection<Color> colors = new ObservableCollection<Color> { ColorA, ColorB, ColorC };

}

Let's say I have a class call Car, inside the class, I have 4 lists.

In another class, I would like use Reflection to call a Linq method to find if these four lists contain anything.

    public void FindProperties()
    {
        foreach (var prop in typeof(Car).GetProperties())
        {
            if (prop.PropertyType == typeof(ObservableCollection<T>))
            {
                var list = (ObservableCollection<T>)prop.GetValue(Car);
                if (list.Any()) 
                  {//Do something}
            }
        }
     }

Since ObservableCollection< T > isn't a thing, the code is not working, but hopefully it explains what I attempt to do. Inside the Car class I actually have 40+ of these lists and I really don't want to do a switch and case cast to do that. It doesn't seem very clean and smart to do that either.

I don't need to know what is T, I just need to know if the list contains anything and maybe use the CollectionChanged event as well. What is the best way to do it apart from casting each field?