[Sascha]

for the dcmd question:

pawn Код:

public OnPlayerCommandText(playerid, cmdtext[])
{
  dcmd(vehicle, 7, cmdtext);
  return 0;
}

dcmd_vehicle(playerid, params[])
{
  if(!strlen(params)) return SendClientMessage(playerid, COLOR, "/vehicle [id]");
  new v = strval(params);
  if(v < 400 || v > 611) return SendClientMessage(playerid, COLOR, "Invalid vehicleid");
  new Float:x, Float:y, Float:z, Float:az;
  GetPlayerPos(playerid, x, y, z);
  GetPlayerFacingAngle(playerid, az);
  x += (5.00 * floatsin(-a, degrees));
  y += (5.00* floatcos(-a, degrees));
  CreateVehicle(v, x, y, z, a-90, -1, -1, -1);
  return 1;
}

(hope that works, just wrote it up)

for the rest: I don't really get what you mean