Well my car sat outside an airport with 60-30ish temps while I was away for 5 days, on my way home and while I was stopped at airport/toll booth to pay, my idle dropped to 400-500 and felt like it was about to dieand then went back to normal, my car had been running for about 5-6 minutes, it hasnt happened since on the drive home. My car is stock and at 36k.

 

The same thing has happened to me...

In fact, 3 times already I'll randomly get in the car and the car is dead... bang the battery a few times...car starts...

I think it's time for a new battery!

 

I had a similar thing happen to me one time and never figured out what caused it, and it never happened again. If the car is currently running strong, and it doesn't happen again I wouldn't worry too much about it.

Might want to give your plugs/wires/coils the once over if you haven't serviced them yet.

 

My car did the same thing tonight..
my plugs and coils are good as i just replaced plugs 10K miles ago and i have the mazsport ignition..
I was at a light and it just shut off..
turned it back onm didnt happen again

temp was 44 degrees

 

^Well the mazsport ignition is your problem but anyways to the OP, you need to have your coils, plugs, and battery checked out. One of those is most likely your problem.