Bad radiator cap won’t hold pressure and overflows the reservoir which dumps it on the ground.

Get battery & alternator tested. Coils wear out and give weak spark

Check the brake pedal sensor. They are cheap plastic and can be pushed too far away or it’s broken.

I had this happen on a long drive but it was the bolts after the cat coming loose letting the pipes separate. The worst side effect is you breathing in the exhaust fumes when stopped.