[Basicz]

pawn Code:

#include < a_samp >

#define HOLDING(%0) \
    ((newkeys & (%0)) == (%0))

#define RELEASED(%0) \
    (((newkeys & (%0)) != (%0)) && ((oldkeys & (%0)) == (%0)))

public OnPlayerKeyStateChange( playerid, newkeys, oldkeys )
{
    if ( HOLDING( KEY_FIRE ) && GetPlayerState( playerid ) == PLAYER_STATE_DRIVER )
    {
          AddVehicleComponent( GetPlayerVehicleID( playerid ), 1010 );
    }

    if (  RELEASED( KEY_FIRE ) && GetPlayerState( playerid ) == PLAYER_STATE_DRIVER )
    {
          RemoveVehicleComponent( GetPlayerVehicleID( playerid ), 1010 );
    }

    return 1;
}

Add as a new filterscript.