Looks like GM had a flurry of trademark renewal action going on in 2012-2013 for the Grand National and GNX monikers... http://tmsearch.uspto.gov/bin/showfield?f=toc&state=4810:n84x6q.1.1&p_search=searchstr&BackReference=&p_L=100&p_plural=yes&p_s_PARA1="grand national"&p_tagrepl~:=PARA1$ALL&expr=PARA1 or PARA2&p_s_PARA2=&p_tagrepl~:=PARA2$ALL&a_default=search&f=toc&state=4810:n84x6q.1.1&a_search=Submit Query
#7-16
#7-16