I do ask the driver to slow down if the speed is unsafe.Or as soon as I get somewhere along the journey where the car HAS to stop,I have even been known to actually get out and walk!!!! I am not a fan of travelling at speed in a car!!!
There's a difference between going above the speed limit and going faster than is safe for the road and the conditions. I'm not a slave to legal limits, so wouldn't even notice if a driver was going above the speed limit.
If their speed is not safe for the conditions, then I would tell them to slow down. No point in getting killed just for politeness sake!
It depends on how fast they were going. If it was near death of course I would ask them to slow but I am generally not a nervous passenger so I wouldn't notice if someone was a bit over the speed limit on a good road
I have been.
I tell them nicely to slow down, or they could get booked.
Once I went with my son who was driving to get to one job he was doing for a customer.
His driving was sooo bad, in the end....I said LET ME OUT!
Took me a calm 2 hrs to get home, but I was not going to sit with him ''foot-brake-foot-brake''.
I would most certainly ask them to slow down. If that was a request they could not grant then it is unlikely that I would ever choose to drive with them again. I pretty fussy about road safety and I expect the people I am with to have as much respect for my life as I do for theirs.