Similarly Marseille to Paris is only 3.5h by train while driving is almost 8h. It entirely depends on your source and destination. Between major economic hubs train is usually faster than driving, and as you can see by a significant amount. For other routes the train is similar or slightly slower.
In North America, on the other hand, the train is almost always MUCH MUCH slower than driving, if you can take it at all. Not to mention far more expensive.