Jul 14 2017 08:13 PM
Michael Clair at MLB.com writes about the history of bullpen cartage, and seemingly confirms that the Mets were the first to go with the baseball-with-a-cap-on design.
Justly dismissed was the 1970s Bombers Sponsor-Driven Pinstriped Bullpen Toyota.
Supposedly, the Toyota's Datsun forerunner died when rats chewed through the cables!