The Times-News Magic Valley (in Idaho) is reporting that actor Bill Faggerbakke has been cast in Transformers: Dark of the Moon "an animated Chevy Impala stock car equipped with machine guns." One of the NASCAR Wreckers seems like a possible choice but keep in mind there is no official confirmation of the casting.
For those unfamiliar with the long career of Bill Faggerbakke, he might be most famous to a younger generation as the voice Patrick Star in Spongebob Squarepants and as Bulkhead in Transformers: Animated. Previous work included the voice of Broadway in the Gargoyles cartoon series, Dauber for 8 years in Coach, and most recently as Marshall's dad in How I Met Your Mother (but just killed in the show from a heart attack). Thanks to Christopher R. for the info.