My car woes continue.

I drove my repaired car for the first time today. In the school parking lot I had to put the car into reverse and, when I did it, something weird happened. The car didn't feel right and I wasn't even sure it was running. I pushed the accelerator; it was running. I backed into the parking space. When I got out I saw I'd left a trail of liquid starting where I'd put the car into reverse. And now a green puddle was forming beneath the engine. Engine coolant. Lovely.