If a car causes another car to swerve and spin-out, is it considered hit-and-run if they leave the scene?

On the way to work this morning, I saw a Ford truck cut off a smaller car and the poor car spun out in the rain and ended up facing the opposite direction. This caused the traffic to stop because it looked like the vehicle wouldn't start. The ford truck most likely knew he did that but kept going, instead of stopping. He didn't hit the car or any cars at all during the time. If he didn't actually hit anything, is it still considered hit and run? Should he have stopped?

No hit no accident. How can you have a hit and run without a hit?

Reminds me of the 80 year old driver who'd never had an accident in his life, he'd seen plenty in the last few years but never had one.