There'll always be gas available at a price and special gov't breaks on permission to operate "classic" gas-consuming cars...huge taxes. In 2100 the person who owns a Ferrari GTO and wants to DRIVE it will have to be rich; the sales prices of any type of gasoline internal-combustion car will have been long flattened out.
it would be interestin to see an F engine modified to run on bio fuels. probably would not be too difficult though if F made diesels it would b a lot easier
Now, but not in 100 years. Gasoline internal-combustion cars will become prohibitively fuel-expensive and gov't regulated/taxed to operate, say by a factor of 30x today's dollar. The cost of purchasing the vehicle will be the same, in 2010 dollars....in 2110, $10 mil will be a downpayment on a house, or the price of a '62 GTO.
I highly doubt it. Either way, we'll both be dead, so I suppose we'll never know who is right! Again, the best of the best (i.e. the 250GTO) will always be worth a lot of money. If you want to argue that a 250GTE will be worth less in real dollars in 2010 than now, that's more likely, although I still disagree.