Brilliant piece of driving by thetruck driver to save the car driver from a certain collision. 
What about the muilty car pileup behind
That is a…
Tidy bit of drivng. Just enough to get matey to slow down but not too much that would cause him to panic.
Eh he could’ve just slowed down w/o going into the car’s lane…car would’ve gotten a clear view of its lane without the added risk of a collision with the truck.