Ontario Power Generation buying GM Canada's former head office building | Globalnews.ca <www.google.com/url?rct=j&sa=t&url=https://globalnews.ca/news/9483566/opg-gm-former-head-office/&ct=ga&cd=CAEYASoUMTgxNzExMTQ5MzM4OTM2MzI2MjcyGWVkMWM5YTkwMzM2NzMxYmI6Y2E6ZW46Q0E&usg=AOvVaw3UIpMLYkQr...> Global News The automaker has since moved its corporate headquarters closer to its Canadian technical centre, test track and the *Oshawa* assembly plant. Story ...