car[0] = AddStaticVehicleEx(470,-710.1328,2324.4019,127.4047,307.9189,43,0 ,100); // 21
car[1] = AddStaticVehicleEx(468,-514.6782,2550.9993,53.1297,86.4095,6,6,100); // 1
car[2] = AddStaticVehicleEx(468,-514.6990,2552.4338,53.0843,87.9950,3,3,100); // 2
car[3] = AddStaticVehicleEx(468,-514.5493,2554.2017,53.0745,83.8978,46,46,100); // 3
car[4] = AddStaticVehicleEx(471,-514.0535,2557.2751,52.9037,92.5018,120,114,100); // 4
car[5] = AddStaticVehicleEx(471,-514.1407,2560.0361,52.8431,90.7432,74,91,100); // 5
car[6] = AddStaticVehicleEx(470,-548.2491,2557.2463,53.4923,267.9488,43,0,100); // 6
car[7] = AddStaticVehicleEx(568,-513.3019,2643.8662,53.4073,359.9999,33,0,100); // 7
car[8] = AddStaticVehicleEx(424,-517.7118,2644.7217,53.2876,359.2311,6,16,100); // 8
car[9] = AddStaticVehicleEx(470,-529.0178,2644.1995,53.5186,358.1688,43,0,100); // 9
car[10] = AddStaticVehicleEx(470,-533.1437,2644.1384,53.5594,0.0402,43,0,100); // 10
car[11] = AddStaticVehicleEx(470,-716.0922,2380.1680,127.7841,159.0945,43,0,100); // 11
car[12] = AddStaticVehicleEx(468,-711.8572,2365.8040,127.3024,57.7228,6,6,100); // 12
car[13] = AddStaticVehicleEx(468,-712.7996,2364.3955,127.1897,58.0552,3,3,100); // 13
car[14] = AddStaticVehicleEx(468,-713.6177,2362.9871,127.1410,57.8943,53,53,100); // 14
car[15] = AddStaticVehicleEx(471,-715.2697,2360.2341,126.6977,59.6976,74,83,100); // 15
car[16] = AddStaticVehicleEx(471,-716.6490,2357.8938,126.6158,60.0105,120,112,100); // 16
car[17] = AddStaticVehicleEx(424,-719.7819,2353.3308,126.7038,51.2771,15,30,100); // 17
car[18] = AddStaticVehicleEx(568,-721.5780,2337.8853,126.1084,304.6407,41,29,100); // 18
car[19] = AddStaticVehicleEx(568,-719.7067,2335.3057,126.2486,302.9700,37,0,100); // 19
car[20] = AddStaticVehicleEx(470,-713.0833,2327.7578,127.1815,309.0127,43,0,100); // 20
car[21] = AddStaticVehicleEx(444,-409.5646,2205.2302,42.7816,7.9773,32,53,100);
car[22] = AddStaticVehicleEx(444,-404.7762,2205.7185,42.7873,7.8851,32,42,100);

// Somewhere in your code (A command for example)
for (new i = 0; i < 23; i++)
{
    if (!IsVehicleOccupied(car[i])) DestroyVehicle(car[i]); // Use SetVehicleToRespawn(car[i]); if you want them to respawn instead of getting destroyed.
}

stock IsVehicleOccupied(vehid)
{
    for( new all = 0; all < MAX_PLAYERS; all++)
    {
        if (IsPlayerInVehicle(all, vehid))
        {
            return 1;
        }
    }
    return 0;
}