[kristo]

pawn Код:

new lastcar[MAX_PLAYERS];

native IsValidVehicle(vehicleid);

public OnPlayerConnect(playerid)
{
lastcar[playerid] = -1;
return 1;
}

public OnPlayerStateChange(playerid, newstate, oldstate)
{
if (newstate == PLAYER_STATE_DRIVER && oldstate == PLAYER_STATE_ONFOOT)
{
if (IsValidVehicle(lastcar[playerid])) DestroyVehicle(lastcar[playerid]);
lastcar[playerid] = GetPlayerVehicleID(playerid);
}
else if (newstate == PLAYER_STATE_ONFOOT) lastcar[playerid] = -1;
return 1;
}

I also added some extra checks that aren't needed but make it a bit safer.