[ded]

Despawn = respawn. If you wanted to just get rid of it, you could change it from:

Code:

dcmd_despawn(playerid,params[]) {
	#pragma unused params
	if(PlayerInfo[playerid][Level] >= 3) {
		if(IsPlayerInAnyVehicle(playerid)) {
			new vehicle = GetPlayerVehicleID(playerid);
			SetVehicleToRespawn(vehicle); SendClientMessage(playerid,MANAGEMENT,"*** Vehicle successfully set for respawn!");
			return 1;
		} else return SendClientMessage(playerid,red,"Error: You need to be in a vehicle to despawn it!");
	} else return 0;
}

To:

Code:

dcmd_despawn(playerid,params[]) {
	#pragma unused params
	if(PlayerInfo[playerid][Level] >= 3) {
		if(IsPlayerInAnyVehicle(playerid)) {
			new vehicle = GetPlayerVehicleID(playerid);
			DestroyVehicle(vehicle); SendClientMessage(playerid,MANAGEMENT,"*** Vehicle successfully set for respawn!");
			return 1;
		} else return SendClientMessage(playerid,red,"Error: You need to be in a vehicle to despawn it!");
	} else return 0;
}

and customize it to your own script.

if you don't know how to use dcmd I can't help you because I have only limited knowledge of strcmp.

maybe ..

Code:

if(strcmp(cmd, "/destroycars", true) == 0)
{
	if(PlayerInfo[playerid][Level] >= 3) 
    {
		if(IsPlayerInAnyVehicle(playerid)) 
        {
			new vehicle = GetPlayerVehicleID(playerid);
			DestroyVehicle(vehicle); SendClientMessage(playerid,MANAGEMENT,"*** Vehicle successfully set for respawn!");
			return 1;
		} else return SendClientMessage(playerid,red,"Error: You need to be in a vehicle to despawn it!");
	} else return 0;
}