I am not going to panic you, bgill. But, my cousin in law lived in Cumberland and they had snakes (poisonous and not poisonous). Long story short, he ran over one and it wasn’t on the road. Later, he went to check his oil and a poisonous snake was curled up on the engine (somewhere on it where it wasn’t hot). I just wanted to pass this story on. According to him, he felt the tire somehow flipped the snake up and under the car and it made its way to the engine.
Ya know, that was the first thing I thought of. Shudder!