For anik

const iTime = 10000;

function onScriptLoad() {
    NewTimer( "ReSpawnVehicles", iTime, 0 );
}

function ReSpawnVehicles() {
    local vehs = GetVehicleCount(), i, veh;
    for (i = 1; i < vehs; i++) {
        veh = FindVehicle(i);
        if ( veh && veh.Driver == null ) { //Check if vehicle exists and it has no driver
            veh.Respawn();
        }
    }
}