60 km/h - locked front wheel, rear wheel in the air, hit the car in the process of tucking the front end.
Practice helps, but when there is a car across your path (this one turned left in front - no signal and no warning at all) and you know you're going to hit the car, it's a whole different ball game from practicing with a cone. You WILL grab too much brake, this is why I am in favor of ABS on a street bike (even though I don't have one with it).
The best panic-stop or panic-swerve is the one you don't have to do. It is extremely rare that I ever have to do a panic-stop like this. I had to do an emergency swerve into the opposing lane this past summer when a car stopped at the stop sign then started to move before I got to the intersection. Braking would have been the wrong thing to do, there's no way there was enough time to stop. But still, in 20+ years and several hundred thousand kilometers, there have been only a few (probably ~5) actual emergency-stop or emergency-swerve situations.
If there is traffic around, the best thing is to position yourself to minimize the need for doing an emergency move ... avoid being beside or in the blind spot of other vehicles in traffic, beware the last-minute dive for an exit ramp by other vehicles (avoid being in the lane that splits, and don't be beside other vehicles), time your arrival at intersections so that whenever possible, you are using another vehicle for cover (if there is multi-lane traffic with a left-turner in the opposing direction) or at stop signs, watch for cross traffic coming to the intersection before you even get there, and slow down or adjust your timing to arrive at a different time ... In last summer's emergency-swerve, I had actually done just that, slowing down slightly to avoid getting to the intersection at the same time as the other vehicle in case they ran the stop sign - but they did stop, they just didn't bother looking before starting again.