1999 Honda Accord turn off & on

Electrical problem
1999 Honda Accord 4 cyl Automatic 138500 miles

on 3 separate occasions, I have been driving over 60mph and my car will turn off, loose power completely, all lights come on, telling me car is "off" - and then within 2 seconds it restarts itself, without me having to turn the key or put it on "park";
I have no "check engine" nor "maintenance repair" light on, and other than having that "oh, shoot" 2second moment, everything else seems to be working fine. I called a 3 mechanics and possibilities where: 1) crank switch - 2) distributor 3) fuel pump sensor in the gas tank?

please help; thank you in advance