How did your MMMv2 die?

[JaySki]

First one - Calibrated, lined up the motor, hit the throttle in the basement(lightly), truck rolled about ten feet, touched reverse, then touched throttle again. Truck stuttered and then a small puff of smoke from right where the LEDs are.

Second one - Ran it on the street for about ten minutes last night... beautiful!
pulled it out tonight, got about 5 minutes and it stopped rolling. No throttle response, but steering still was operational. about 10 seconds later as I ran down the street to get to the car, it tried to roll again, like it initially tripped something and reset, as soon as it tried to roll again, it stopped and then no power. No lights, no steering, nothing.

Nothing hot what-so-ever.
E-revo
NEU 1515 1.5d - 22P 56 Spur
2X 2S2P 8000Mah Maxamps
futaba 3pm tx/rx