Belly, I'll give you my answer to (1). Then maybe someone else can help with the others:
In fact, 'Harry felt the sidecare lurch nastily' would have been fine. But the author has decided to emphasize the movement. In so doing, to use the word 'give' also implies that the sidecar was not just an inanimate irrelevance: a technique that I believe many authors use.
Student or Learner