Me Grande Arche de La Defense, then bus 258, or RER to rueil-Malmaison, and then walk.
You can't take the bus 258 from Me Grande Arche de La Defense but you can take the RER to rueil-Malmaison but from there you take a taxi.
mnli hypothesis: You can't take the bus 258 from Me Grande Arche de La Defense but you can take the RER to rueil-Malmaison but from there you take a taxi. premise: Me Grande Arche de La Defense, then bus 258, or RER to rueil-Malmaison, and then walk.