A mate of mine, Alan, bought a Lamborghini Countach LP4 QV new in the late 80s.
His brother, and business partner, bought a Ferrari Testarossa at the same time. They both paid almost £100000 each at the time.
His brother sold the Ferrari, in the late 90s, at a loss.
Alan kept the Lamborghini, its value dropping to a low of around £35000, before it started to appreciate. He only uses to do about 300 miles a year.
I went in it a couple of times and it was quite an experience - a visual, aural and physical assault. Bit agricultural though.
Countach's are currently going for anywhere between £250000 - £500000, so I reckon he made a pretty shrewd investment.