Cumbria Police and Crime Commissioner Richard Rhodes has begun addressing the media at a press conference.
He admitted making two mistakes; "failing to check cost of the driver and car and his expenses not being published online until this week".
He has apologised to the people of Cumbria.
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Organisers have said the event was a 'massive success that exceeded all expectations'.
Curtis Kirkbride, 27, of Kinniside Avenue, is said to be involved with a domestic assault that happened this weekend.
The Case make tractor excavator was stolen from the KN Training site at the Broom Industrial estate, Newbie, Annan.