I was reading an article earlier today about General Motors celebrating 75 years of producing the Suburban - the longest running nameplate in the business. GM allowed some journalists to drive some of the older generation models. The article said that some of the models came from the GM Heritage Center. I hadn't heard of this place so I googled it and found out that its located in Sterling Heights and has somewhere between 600-800 models. However, this place is not open to the public. I was just wondering if anybody on this forum has had the opportunity to take a tour? If so, what did you think of it?