You can't miss this MotoMart during a trip to Six Flags-St. Louis, as it's directly across from the popular theme park. That location makes it a convenient stop for gassing up before hitting the road home. Live a few hours away and need to reload on snacks and other road fare before taking off? No problem either; MotoMart is no slouch in the convenience store arena. There's also an attached McDonald's restaurant, for those wanting a sit-down meal before that ride home.