[Emmet_]

Two functions I've made some time ago, they work perfectly:

pawn Code:

native IsValidVehicle(vehicleid); // YOU NEED TO PUT THIS IN YOUR SCRIPT!

stock RandCar()
{
    new rand = random(MAX_VEHICLES);
    while (!IsValidVehicle(rand)) rand = random(MAX_VEHICLES);
    return rand;
}

stock RandPlayer()
{
    new rand = random(MAX_PLAYERS);
    while (!IsPlayerConnected(rand)) rand = random(MAX_PLAYERS);
    return rand;
}