I'm starting to get paranoid.
Very early this morning, in slightly-humid conditions, temperature 48 degrees, I was stopped at an intersection of two main highways.
My foot was lightly on the brake, as that's usually all it takes, to stop.
Then abruptly the car started to surge forward, into the intersection. I immediately slammed on the brakes, to hold it, and so it didn't get far. I then slammed it into "park."
No warning lights on the dashboard lit up.
The RPM gauge, which consistently runs on 1.5, always between 1.0 and 2.0, surged to 3.0 before I slammed on the brakes; it looks as if it would've revved up higher if I hadn't slammed down the brakes and put it in "park" (I'm a fast reactor; we're talking no more than two seconds here, from when the surge began until I was in "park").
The rest of the drive home, 17 miles, nothing untoward happened.
I'll take it to the mechanic on Tuesday--I'm busy today--but in advance of that, might anyone have any idea what might've caused the surge? It's all speculative, of course, but it helps.