Auto industry is ripe for 'disruption'. 100 years of little innovation, incremental changes will no real innovation. All they were focused on was tuning suspensions, chassis and adding incremental technologies like BT. They are taking shortcuts like increasing displacements to increase engine power output, as if that is some kind of innovation.
There is no real focus on improving thermal efficiency of engines, still at the most ~30%.
Every new of model year is heavier than the previous model year. How is this innovation? Aluminum chassis has been there for decades, why hasn't that propagated in all the models, especially the so called luxury makes who only focus on top 5mm layer of the car, the sheet metal and interior materials. They charge more for the same car with slight suspension modifications, but won't really innovate. For example they could start by making the car lighter than previous model year.
Germans have really tarnished the meaning of engineering, almost 100 years of reciprocating engines with horrible thermal efficiency and little progress.
What?
Aluminum is lighter, but not as strong as steel, so while the outer cosmetic pieces (hoods, fenders, etc) are being made out of aluminum more often now, the underlying structure (the bulk of a car's weight) still has to be steel. Aluminum is also more expensive than steel, so from a cost standpoint it doesn't make sense to use aluminum - especially in cheaper cars. BMW has innovated a lot with CFRP (carbon fiber reinforced plastic) and is the first automaker to employ CFRP on a wide production scale in the chassis of the i3, i8 and new 7 series, with future models to employ more CFRP as they are replaced with the new generations.
The internal combustion engine is inherently a very inefficient method of converting energy. You are literally lighting a fuel on fire to extract its energy, so the majority of that energy is going to be wasted in heat. You can only do so much to it to make it more efficient, but there has definitely been a lot of innovation to increase the efficiency of the ICE over the years. Things like fuel injection, variable valve timing, variable cam phasing, forced induction, increased compression ratios, electronic engine management, etc. Transmission technology has also improved a lot maximize the efficiency and performance of the ICE, with many cars today coming with 7-10 speed automatics or CVTs.
Mazda is currently working on HCCI gasoline engines (diesel-like auto-ignition due to compression instead of a spark) that improve efficiency by as much as 30%. The real future will be electric, but the battery technology and infrastructure are not at the point where we can replace the ICE in any significant scale right now.
There has been a recent trend in the automotive world to downsize and increase efficiency. Automakers are utilizing smaller turbocharged engines to replace bigger ones. The new aluminum body Ford F150 is lighter than the previous. The new BMW 7 series utilizing CFRP is lighter than the previous.
I think theres a lot of ideas that engineers have up their sleeve that can't be implemented yet due to limitations in current technology, materials science, and/or production ability. Just like how Steve Jobs probably came up with the concept of the iPad decades ago, but it wasn't possible to make it a reality until 2010.