new CarParked[MAX_VEHICLES];

public OnPlayerCommandText(playerid,cmdtext[])
{
if(!strcmp(cmdtext,"/park",true))
{
if(!IsPlayerInAnyVehicle(playerid)) return SendClientMessage(playerid,COLOR_RED,"You aren't in a car!");
CarParked[GetPlayerVehicleID(playerid)] = 1;
SendClientMessage(playerid,COLOR_GREEN,"Car Parked");
TogglePlayerControllable(playerid,0);
return 1;
}
if(!strcmp(cmdtext,"/start",true))
{
if(!IsPlayerInAnyVehicle(playerid)) return SendClientMessage(playerid,COLOR_RED,"You aren't in a car!");
CarParked[GetPlayerVehicleID(playerid)] = 0;
SendClientMessage(playerid,COLOR_GREEN,"Car Started");
TogglePlayerControllable(playerid,1);
return 1;
}
return 0;
}

public OnPlayerStateChange(playerid,newstate,oldstate)
{
if(newstate == PLAYER_STATE_DRIVER)
{
if(CarParked[GetPlayerVehicleID(playerid)] == 1)
{
TogglePlayerControllable(playerid,0);
SendClientMessage(playerid,COLOR_RED,"Your car is parked. Type /start to start your engine!");
}
}
return 1;
}