User blog comment:SpaceManiac888/Rusty Spanner of the Episode: Series 10, Grand Final/@comment-4700688-20171203223340/@comment-6279140-20171204141936

Of the robots in the rumble, only Thor and Expulsion drove into the pit. Of the remaining robots, Apollo, Track-Tion and possibly Big Nipper were only robots to have been pitted after their immobilization.