Janis Joplin's Custom Porsche on December 05, 2008 Get link Facebook Twitter Pinterest Email Other Apps Janis Joplin and her '65 356c Porsche Cabriolet I've been humming and hawing over buying a vintage Porsche or a vintage Mercedes. Bought in 1968 for $3500 by Janis Joplin, the Porsche 356 Super C. Painted by Dave Richards. Related Post: Mercedes: A Luxury Biofuel Ride The Vega: A Big Star Among Little Cars