The Audi system sounds like a good one.
You are correct about trail braking in the strictest sense. Some people accomplish trail braking by left-foot braking so that they can keep RPMs up going through the apex.
What I was really talking about was left-foot braking, but most times I've seen it done is when trail braking.
Very true. People race what they have. How this could be implemented is with a timeout. The car also brake/throttle overlap for a set time, and then if it goes over that time, cut the throttle. That system wouldn't impact heel-toeing at all, and not trail braking either (I guess it depends on the specific corner).
But then you would have people saying that the delay in cutting throttle may cost lives. Somebody with an out-of-control car would have (say) 4 seconds less to get back in control.
Are you serious? That's not what this does at all. What would happen is that it would cut out your throttle if you are on the brakes, not shut off the car.
There's a lot of cars that have the 'brake takes precedence' feature. The only real reason to not have such a feature is because of trail-braking or hell-toe shifting. Both are racing/performance driving techniques you won't be doing in your Camry. Plus, it is a pure software feature in that if it detects you braking, it will cut throttle. So there's no big issue there.
Also, cars have their computers updated all the time, and it has never been a big deal in the past. The Nissan GTR was the last example that made the news (to cut down on the RPM the launch control used). But really, cars are reflashed all the time. Its not a big deal.
Going the speed of light is bad for your age.
