I like Bruce, but that's taking things a bit far. It took more than Cadillac Ranch to bring an end to communism. Yes, it will have helped, but winning the Cold War required more subtlety and subterfuge than that. Some of us were working unnoticed, behind the scenes, prodding here, pulling the right string there.
I can't go into details, obviously, but I can reveal that I did once sign a petition. Gorbachev was big on petitions. The biro is mightier than the Fender, remember that.