You need to jump forward to 45S. to start of run. My 13 yr. old son is in the Pass. seat and we had a ball running our new to us MCS at a local auto-x. Got fourth out of ten or so in E class(NASA). Hope we were not too corny.
http://www.youtube.com/watch?v=hQ8uD9oy_Pc

 

A shot from outside the car.

 

Looks like fun! I love your son's reaction when the announcer said your time.

 

I love the video. Nice job and sounds like it was a great day to share with your son. Hope to do the same with my son soon.