The $70/hour for autoworkers is a myth. The actual number is $28/hour - which comes out to $60,000/year. The Honda, Toyota, etc. plants in the US pay around $24-25/hour. The benefits received by UAW-represented workers comes out to an additional $10/hour. Horrifying, isn't it, that people who work 40 hours a week should receive health and disability benefits.
Source: http://www.tnr.com/politics/story.html?id=1026e955-541c-4aa6-bcf2-56dfc3323682
and
http://www.portfolio.com/views/blogs/market-movers/2008/11/18/the-return-of-the-70-per-hour-meme