DETROIT (Reuters) - After 107 years of tooling roads from Nova Scotia to San Diego, the last Oldsmobile rolled off a Michigan assembly line on Thursday, marking the end of the oldest auto brand in the United States. Workers signed their names under the hood of the last car -- a cherry red Alero -- which will be displayed at the R.E. Olds Transportation Museum. It will end up in the collection of parent company General Motors Corp. . Ransom E. Olds founded Oldsmobile in Lansing in 1897, and soon after the turn of the century "the Olds" became a...