OK, let's jump right into Stage 6.  Things start getting rough.  Here's the preview.

 

Same cars as Stages 4 and 5.  Only four challenges, two of which are kinda cheesy (placing 3rd in a cup and 2nd in an elimination).  The rough one is the last challenge - 3 laps at night on Le Mans, without the map.  If you don't know this course by heart, this is a killer, especially when the bots knock your headlights out within the first few minutes. You're running blind for 12 minutes on an unfamiliar course. Not fun.  Plus, the bots are now getting tougher and harder to shake.

 

Tips for this last challenge: pick your car well - drive one you're very familiar with (I chose the Lambo, after losing horribly several times in the Viper).  Try to get to 2nd place as soon as you can, and stay close to car in front of you to help lead the way as long as you're comfortable with.  Once you do get into the lead, turn your assists on (traction and brake) let the car drive the course for you, but be aware that the other bots will be breathing down your neck the whole way.