[ICECOLDKILLAK8]

dont use && use ||

pawn Код:

if(newstate == PLAYER_STATE_DRIVER && GetPlayerVehicleID(playerid) == bumpcar1 || GetPlayerVehicleID(playerid) == bumpcar || GetPlayerVehicleID(playerid) == bumpcar2 || GetPlayerVehicleID(playerid) == bumpcar3 || GetPlayerVehicleID(playerid) == bumpcar4)
{
TogglePlayerControllable(playerid, 1);
SendClientMessage(playerid, COLOR_RED, "DISCLAIMER:Welcome to FUN-BUMP DEATH CHALLENGE !");
SendClientMessage(playerid, COLOR_GREEN, "DISCLAIMER:Type /startbump to start the FUN-BUMP DEATH CHALLENGE !");
}

That should work, The way you were doing it was checking if thier new vehicle id is all of them ids put together