If ever there was an undervalued supercar, the Porsche 930 was it. Performance was prodigious, it certainly attracted attention and as a bonus you could actually drive one as regular transport. So why were 1970s-80s models worth so little for so long? Certainly a lot of the people who could afford a 930 couldn’t drive one properly and knew they couldn’t so wisely stayed away. But for what in 2005 was GT Falcon money, this 80,000km car had to be a huge bargain. If you were smart enough to pounce at that price and held on through the GFC your silver Porsche will have trebled in value.