Engine black smoke?

Not going to lie I was going 90 down the road, and I already knew I probably had a transmission leak. well, going to the funeral my car wouldn't let me press the gas pedal, it started slowing down. i got it to the side of the road turned it off then started it again, finally got it to the closest school. and let it sit. i got back on the road again and it did the same thing but this time my brake locked up. had a school officer help me off to the side of the road. got it towed back to the house. my step dad got it cranked up and he said there was a ticking sound coming either from the front of the transmission or the engine but there was black smoke that came out of the back.