I did the Summer DD defensive driving course when it came to Shepparton. Can not rave enough about it. Katie will LOVE it.
As for 2 in one car - there were a couple of L-platers at the shepp one, and one of them was sharing the car with his mum who also did the course, so I dont see why not, but best to ask Bec.
I left the course wanting to do the skid pan day in Luke's skyline, but have since changed my mind - that thing scares the crap out of me! (and I think would be grounds for divorce if I broke it!)