[RanSEE]

Код:

public OnPlayerCommandText(playerid, cmdtext[])
{
     if(strcmp(cmdtext, "/destroyveh", true) == 0)
     {
          new currentveh;
          currentveh = GetPlayerVehicleID(playerid);
          DestroyVehicle(currentveh);
          return 1;
     }
 
     return 0;
}

That should be it i guess.
P.S: Could you kindly post whatever you have made so that i can help ?