Поиск элемента в list

#include <iostream>
#include <fstream>
#include <algorithm>
#include <iterator>
#include <string>
#include <list>
 
using namespace std;
 
class Car
{
public:
    int position, speed, finish, number_lines=0;
    string number, find_number; 
};
 void ReadOnFile(string& fname, list<Car> &inputFileList)
{
    Car a;
    ifstream FinnTheHuman(fname);
    while (!FinnTheHuman.eof())
    {
        FinnTheHuman >> a.position >> a.speed >> a.number >> a.finish;
        inputFileList.push_back(a);
        a.number_lines++;
    }
 
}
 
template <typename T>
void Show(const list<T> &Values)
{
    for (auto it = Values.begin(); it != Values.end(); ++it)
    {
        T v = *it;
        cout << v;
    }
    cout << "\n";
};
 
template <typename T>
 Car FindCar(Car& a, list<T> &Values)
{
    cout << "Enter the number  a car: ";
    cin >> a.find_number;
    list<T> FinfNum;
    bool ret = false;
    for(auto it=Values.begin(); it!=Values.end(); ++it)
    {
        FinfNum = it;
        //*it = list<T>();
        for (auto id = FinfNum.begin(); id != FinfNum.end(); ++id)
        {
            T g = *id;
            if (a.find_number == g) ret = true;
        }
    }
    if (ret == true) cout << "Car on road" << endl;
    else cout << "No car on the road" << endl;
 
}
 
 
std::ostream& operator<<(std::ostream& s, const Car& t)
{
    s << t.position << " " << t.speed << " " << t.number << " " << t.finish << "\n";
    return s;
}
 
int main()
{
    string FileName = "file.txt";
    list<Car> file;
    Car a;
    ReadOnFile(FileName, file);
    Show(file);
    FindCar(a, file);
    
    return 0;
}

template <typename T>
list<T>::iterator FindCar(list<T> &Values)
{
    string a;
    cout << "Enter the number: ";
    cin >> a;
 
    list<T>::iterator it = find_if(Values.begin(), Values.end(), [a](const Car & c){ return Car.number == a; });
 
    if (ret != Values.end()) cout << "Car on road" << endl;
    else cout << "No car on the road" << endl;
 
    return it;
}

return c.number == a;