Well, hang on there. It is useful. Say you want to race an endurance race and say you have the X2010. Here's what I do. I set the Pit strategy so that the driver makes a pit stop when he's at 10% strength. Why do I do this? Because otherwise, the tires will go to zero and who knows what will happen. Setting the strength at 10% means that the driver will make a pit stop every single lap after he reaches that strength level. Bad you say? No, since he's using the X2010, he blows away the competition even making a pit every lap. Simple way to achieve the endurance races and make gobs of XPs for your B-Spec driver.