GM had previously trademarked Colorado Bison back in 2017, and this week ZR2 Bison.

http://tmsearch.uspto.gov/bin/showfield?f=doc&state=4810:6e49gh.2.1

This week GM also supposedly announced at their dealer meeting in Las Vegthat the AEV Colorado from SEMA would be available as a conversion. AEV’s logo is a Bison.

https://www.aev-conversions.com/index.php?option=com_content&id=296