You will rarely get pulled over for speeding on the motorway in the UK. You will be fined if caught by a speed camera, but for the most part they're clearly marked and drivers know to slow down. For those who are pulled over for speeding, they're usually let off with a warning provided there's nothing else going on, such as dangerous driving, or substance abuse.

In Germany, you can easily contest speeding accusations when caught on camera, especially if your face is not clearly visible. My first speeding ticket ever was actually on the Autobahn. They wrote me a letter saying that I had been accused of speeding. They never followed up with it.

Sweden has 600 traffic cops to cover the whole country (at least that was what I was told in a Swedish driving school in 2014). Getting pulled over for speeding on the motorway rarely happens. I once drove from Ystad to Göteborg going over 200kmh most of the way. No problem. I was once spoken to by a police officer after I drove through the tunnel in the centre of Göteborg at more than twice the speed limit. The officer simply asked me to slow down.

In Poland the motorways are very well made, and so the speed limit is a bit higher — 140kmh if I remember correctly. There aren't any speed cameras on the motorway, and in my experience the police won't come and issue fines to people unless there's been an accident. Even then, the maximum fine is ~€100.

Some countries — I think most — are quite lenient. Some countries like Spain are more like the USA, and actively look for people to fine by hiding in different places every time. The Polish don't even bother hiding. If they want to raise some revenue, they'll sit in the same spots every time. It's also not true that every EU country will pursue a speeding fine no matter where you are from.

Every friend I have in the USA who has been pulled over for speeding has been fined. Police in the USA are militant. That's just part of their culture. This is pretty clear in all the videos available on YouTube too.