That is a feasible approach to help get products to market quickly, if the maker thinks that they need the product .

But the automotive industry thinks very statistically - design for 10 years, and the percentage failures in the 1/3/5 year warranty periods become very small. Depending on the OEM, it is all a trade-off between reliability/technological image of the company/profit etc. Some will be quicker than others to embrace new technology.

Entertainment (Audio and Video) applications have the luxury of not being safety-critical - if your empeg hdd dies, you won't lose control - and so can make some of these trade-offs easier. Automotive hdds are also wanted for all sorts of other uses, which require complete robustness or else the car stops or crashes!! There is a tendency to want to hedge their bets and wait until the full-automotive hdd is good and ready, before using it anywhere.

Unfortunately for all technofans, OEM car manufacturers are not very big risk-takers!! As they start to appear though, hopefully everyone will feel they have to follow....