What they need to do is more like a clinical trial for a drug.<p><pre><code>    Step 0) measure on a dyno
    Step 1) measure on small closed course with a handful of drivers
         who are unknown to the car companies
    Step 2) measure on a larger group of cars in the real world
</code></pre>
If these &quot;costs&quot; are unacceptable, then auto manufacturers shouldn&#x27;t be putting cars on the road. I always thought trusting the ECU to tell the truth was ridiculous, mostly because over end user tampering not the original code. But the effect is the same.<p>It really is bullshit that so much time has been spent overfitting to the test when real universe exists right here. No model required.