[CutX]

in your /destroycars cmd
just take the message out of the loop.
just do that:

PHP код:

            new string[128];
            format(string, sizeof(string), "{FF0000}[Admin Warn]{FF6347} %s has destroyed all Created vehicles (/veh)icle.", NORPN(playerid));
            SendAdminMessage(COLOR_DARKRED, 1, string); 


after the loop's done.
Never use messages in a loop unless you want to spam something :P

the /destroycars cmd should look like this,

PHP код:

CMD:destroycars(playerid, params[])
{
    if(PlayerInfo[playerid][pAdmin] < 2) return SendClientMessage(playerid, COLOR_GREY, "You are not authorized to use that command!");
    new string[103];
    for(new i = 0; i < sizeof(cVeh); i++)
    {
        if(cVeh[i] == INVALID_VEHICLE_ID) continue;
        DestroyVehicle(cVeh[i]);
        cVeh[i] = -1;
    }
    format(string, sizeof(string), "{FF0000}[Admin Warn]{FF6347} %s has destroyed all Created vehicles (/veh)icle.", NORPN(playerid));
    SendAdminMessage(COLOR_DARKRED, 1, string);
    SendClientMessage(playerid, COLOR_GREY, "   Created vehicles destroyed!");
    return 1;
}