Given a travel related situation, and given a specific question about the situation, summarize the question into a title
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Question: I have a 75 hour trip to Beijing (PEK) coming up in October. I shall enter at PEK on a flight from London, arriving at 0930 and continue onwards by air to Hong Kong three days later at 1230, and I shall be travelling on an ordinary British passport.

I understand that the 72 hour transit visa on arrival actually begins the midnight after my arrival (and not immediately after arrival). The relevant text from TIMATIC is
Visa required, except for Holders of British passports
endorsed  British Citizen  holding confirmed onward airline
tickets to a third country, if arriving in and departing from
the same city:
- at Beijing (PEK), Chengdu (CTU), Chongqing (CKG), Dalian
(DLC), Guangzhou (CAN), Hangzhou (HGH), Shanghai Hongqiao
(SHA), Shanghai Pudong (PVG), Tianjin (TSN), Wuhan (WUH),
Xi'an (XIY) or Xiamen (XMN) for a max. transit time of 72
hours, starting from 00:01 on the day following the day of
entry.
- at Guilin (KWL), Harbin (HRB), Kunming (KMG) or Shenyang
(SHE) for a max. transit time of 72 hours;


However, although several non-official sources substantiate this distinction, I cannot find any official confirmation of this. Does anyone have any experience in doing this kind of transit?


Answer: Chinese 72 hour transit visa rule: exact start time of period


Question: Neither specific websites of Hertz, Budget, Alamo, Enterprise, Thirftly or FOX allow you to specify that you want to rent a manual car. Neither do Kayak, Hotwire and Priceline. 

Is there a way to book a manual car in the US?


Answer: Renting a Manual Car in the US


Question: As seen in the Politics SE:


  Right now, you can jump on a ferry in France, head over to Cork, drive up to Belfast and catch the ferry to Liverpool, without ever showing your passport to anyone. It seems inconceivable that this arrangement could be maintained if and when the UK leaves the EU. 


Best I'm aware you'd need to show your passport before boarding in France, in much the same way that you do when taking the Eurostar to London. Because Ireland, like the UK, isn't part of the Schengen zone.

Which is it?

Bonus question: would you also need to show your passport to go from Belfast to Liverpool, or is that second assertion factual?


Answer:
Do you need a passport to take the ferry from France to Ireland?