It was, of course, a sweeping statement and all sweeping statements are false. Most of the time 

I think the behaviour you had described is "kind of" us bikers' behaviour : ride with traffic's flow, but if the opportunity presents itself, overtake the row in the blink of an eye. Bikes do it on 2 wheels, EV's do it on 4.

b) they never drive fast anyway......Some do, sometimes

My technique also for dealing with up ramps. I had a particularly difficult exit from an underground hotel car park in Vernon
It was very steep with a sharp left hand turn. I had to take the panniers off and get Melanie to stand at the top and give me the go signal, the last thing I needed was a car coming in as I was leaving.

I have just had a look at Vianden on Google streets and as far as I can tell there are no cobbles on our route.

Rae, for that our technique has always been to have the other rider (or a pillion, usually my daughter) stand at the top of the slope and, as soon as the door is open they will wave either go or stop. If it's go, a rapid charge up the ramp ensues followed by an equally swift stop at the top to avoid ending up in the road.

On another matter, the main road through Vianden was (so presumably still is) cobblestones, and we've seen many nervous departures from the hotel there, undoubtedly with good reason when it's wet.

...and 'hella accelerating' too. On the bike this isn't a problem, but I am noticing more and more a 'my rate of change of speed is greater than yours' mentality of ev drivers when trying to overtake them in the car.

They are not driving fast because, well, no one else does, but they hate being overtaken so they out braaap you (without the braaap bit) when there is an overtake opportunity but then slow down again when there isn't.

People with exceedingly rapid cars who could behave in this way never do because a) with great power comes great responsibility and b) they never drive fast anyway.