$ sudo dpkg -i cuda-repo-ubuntu1604-8-0-local-ga2_8.0.61-1_amd64.deb

dpkg-deb: error: 'cuda-repo-ubuntu1604-8-0-local-ga2_8.0.61-1_amd64.deb.deb' is not a debian format archive
dpkg: error processing archive cuda-repo-ubuntu1604-8-0-local-ga2_8.0.61-1_amd64.deb.deb (--install):
 subprocess dpkg-deb --control returned error exit status 2
Errors were encountered while processing:
 cuda-repo-ubuntu1604-8-0-local-ga2_8.0.61-1_amd64.deb.deb