Yeah, hard to believe, but the B&M's road slug, or TEBU as they preferred to call it, is 25 years old, so it's "legit" in this group.
This photo was taken at the road's East Deerfield, MA. shops on March 12, 1983, shortly after it began service. The unit was built in 1982 from ex UP GP-9 #134. GP40-2's 300 and 301 were the usual "mother" units assigned with the slug.