Reflection - from Type to Class (not instance of class)

How do I write something like this?

string json = null;
Type[] types = Assembly.GetExecutingAssembly().GetTypes();
var carTypes = (from type in types
                 where type.IsClass && type == typeof(Car)
                 select type);
foreach(var carType in carTypes )
{
    string typeName = carType .Name;
    string jsonFile = typeName + ".json";
    json = File.ReadAllText(jsonFile);

    // How can I not hardcode "Porche" here and instead use "carType"?
    IList<Porche> cars = Newtonsoft.Json.JsonConvert.DeserializeObject<List<Porche>>(json);
}

Here, Porche is a sub class of Car - Both "Porche" and "Car" are Class. In additional to Porche, we have Toyata, BMW, Tesla... I want to dynamically retrieve them via Reflection (avoid hardcoding) "cars" is a list of instances of cars.

"carType" is Type. How can I use "carType" in JsonConvert.DerserializeObject which take List as argument?

IList<someReflectionAPI(carType)> cars = Newtonsoft.Json.JsonConvert.DeserializeObject<List<someReflectionAPI(carType)>>(json);

Thanks