They say that they are using a detuned V6 powertrain from the current Formula 1 program. I can't see how they will see any longevity from that engine without it being rebuilt after xxxx miles.
I know that with the Carrera GT, which is as close as I dare say to a Supercar with a race spec motor, the motor only feels good until it has 5,000 miles on it. After that point, the motor feels noticeably different in terms of the power delivery and the power available.
Even if it is a detuned unit, they are pushing approx 900 horsepower (in qualifying spec) from the lets face it tiny 1.6L V6. There is not that much room in terms of detuning further to create longevity. Also the fact is that 850-1000 horsepower is the aim for this powertrain, and the F1 cars are lasting 1,200 - 1,700 miles in a cycle, which is not in the 900 horsepower, quali trim all the time anyway.
Just my 0.02
"Not putting miles on your cars is like not having sex with your girlfriend so she'll be more desirable for her next keeper."