Um... now you're saying you were actually referring to something specific. Now it just sounds like you're backtracking :/ You made clear broad statements:
"shadows actually never look like that. only shadows from the car are soft."
Implying that all shadows should look like the one underneath the car when 1. shadows underneath the car are affected by motion blur and 2. shadows in real life CAN look like the ones that you highlighted in that particular screenshot. Here I whipped up a collage of real-world examples just for you:
" it would be funny if it actually is using PCF"
You didn't say PS3-style there and correct me if I'm wrong but even if they DID use PCF, it does not necessarily mean hard shadows.
My main point of contention was basically you saying the tree shadows should look like the one underneath the car in the PCars screenshot and your liberal use of the
term PCF to mean hard, stencil-like shadows.