Scratch

I'm not sure what my goal was I was just experimenting.
   By learning I mean each time it attempts the course it will tackle it differently depending on what happened in it's last attempt.
   It doesnt respond to the sensor input as such because as soon as it crashes it restarts rather than bouncing off.  This means that once it has "learnt" the whole track it no longer needs any sensors.
   The number of sprites is unnecassary but it was just a quicker way of making the project.  It stores variables for speed and turning for many small sections of the course.  The first sprite moves (moves) steps and turns (turn) degrees for 70 repitions and the n the next sprite carries on doing the same.  I used many spites so i could use local variables and did not need to keep creating new variables, instead i just copied more cars.

Thanks for the clarification.  It gave be the framework to appreciate your scripts.  I'm working on my version.

I love this demo!