Sooner or later these hybrids will bring that engine technology to road cars: Already some of the turbos are gaining Motor units to spin up the turbo for lower latency. Turn those motor units into generators and absorb excess turbo RPMs and turn it into electrical power. Take the electrical power out of the Turbos and apply it directly to the crankshafts. Presto, an engine with more TQ basically for free. The only things astronomical about the current engines are those associated with making the motors weight next to nothing and still deal with 160-200 HP of heat. Make the motors 25 pounds instead of 3-4 and those problems and the expenses go away. The BIG HP small displacement motors of today would not be possible without the turbocharger technology being developed. The other thing is that the current F1 motors are delivering 1000 HP +/- on the same amounts of fuel that the V10s could only make 600 HP on. So there are substantial fuel economy gains to be had using this kind of technology--and road cars want this (at least the governments of countries want this). BESIDES:: if ICE motor technology does not keep developing, they will get eaten by electrical power in NO TIME.