Hi Matt,
If the car is going over a crest, that explains the difference in blur from front to back, I have very similar issues taking pictures of forest rallies. I can cope with the horizontal movement, but not with vertical movement at the same time.
B&W - Not the most inspiring shot, but on theme.
Ancient - I think that works - nice use of the arched doorway to frame the garden.
It feels like it may need a little more black in the shadows / darkening of the mid tones, but that's just me.
Urban - Blimey, another clock in my mammoth comment catchup. I can't help feeling it's a bit hazy, maybe something for CC's de-haze tool (I don't have CC...)
Pair - That's a lucky find / great find, it can't happen all that often. Excellent framing through the foliage.