Hi Lunchbox,
I'm not really disagreeing with you because I don't know what I'm doing since I'm not an economist, but here's what I come up with...
I think they say the average inflation tends to be around 2.5% - 3%. Let's go with 3% to go with the higher estimate. There's 37 years between 1970 and 2007, and a 1970 Dodge Challenger cost $3,000, so:
$3,000 x 1.03^37 = $8,955.68 ...according to Excel.
Using the same logic, that $200 difference in 1970 should be about $597 difference now.
The problem, of course, is that the modern cars are probably closer to around $25,000 for the base mustang and $30,000 for the base challenger. After controlling for inflation, why is the price of cars so astronomically high now? And with all the cheap foreign-made plastic parts nowadays? I guess it's the on-board computer, cruise control, overhead cam crap, catalytic converter, airbags, anti-lock brakes, cost of using wind tunnels, massive money in advertising, marketing research, etc., etc.
I'd be much more tempted to buy a modern version that is brand new for about $10,000, like this shows though, minus all the other crap.
As a sidenote, this formula suggests that prices double roughly every 23-24 years, assuming no other factors affect the product. This seems to hold true for simple products, like the price of movie tickets. Just my