Can the IS-F withstand the test of time?

It has been roughly 5,000 miles and six month since I purchased my IS-F. I've been thinking of what is to come of the IS-F in the future. Generally, cars like this become the obsession of teenagers who cannot quite grasp the reality of price. Five years down the line though, this vehicle will most likely have a younger, tuner crowd behind the wheels. This is exactly what you see with the older SC400 and IS300 series Lexus vehicles. Parents have passed these cars down to their children, or they managed to save up enough money to buy a used model.
I have a good feeling that this car will be driven by teens in the years to come. The design is less mature than a standard Lexus, with body kit modifications and a unique stacked exhaust. If this car does not hold it's value and starts losing demand, it may very well be in the hands of teens sooner than anticipated. There is no doubt that these engines will withstand the test of time. The IS-Fs are built for abuse, and will not leave the road for a long time. Could soaring gas costs in the future reduce the likelihood of a less fuel efficient vehicle being driven on the road?
What about the legacy? There is the possibility of the F series model to be discontinued in the future. This may or may not increase the collectible value of the car. Take a look at the Toyota Supra, for example. The value of this vehicle has gone up over the past few years as the performance potential of the engine has been exploited. We may see the same exploitation of the much larger V8 engine in the IS-F in a few years. There is no doubt a fully modified IS-F has some serious horsepower potential. I believe the F legacy, whether successful or not, will be remembered as a bold attempt by Lexus to produce a vehicle outside of their target niche.