/// <summary>
/// Method to get list of car instances for a user using User Id
/// </summary>
/// <param name="userId"></param>
/// <returns></returns>
public List <Car> GetAllUserCars(string userId)
{
if (userBusiness.GetActiveUser(userId) != null)
{
return(carDataAccess.GetListOfCarInstances(userId));
}
else
{
return(null);
}
}