My previous two shots back a couple pages were taken with the same setup. It's not a perfect lens, but one of the coolest things about it which you may have seen in previous shots of mine is that it does a great job shooting straight into the sun (if you like starbursts).
I think the second image is really great! Nice job.
Yes, I'm still practicing. Getting better every time. A little sharpening in post really makes 'em pop, even if I didn't pan the car perfectly.
Here's a bonus:
Super Takumar 200mm f4 @ some aperture