I must have been doing the motor bike sound since I was a nipper, unfortunately I need to work on using it several times in a sentence at Ducati speed as the lady in the link does.
My version seems to come from under the front of the tongue and not the throat.

Ask a Scottish person to say the word 'murder', slowly, and copy them.

Wow.I never knew and there are others on here too.

Spent most of my time living the Derriford Roborough area and elburton and Plymstock area.

I learnt this trick on a language course, and although it sounds counter-intuitive, it worked for me..to an extent...
When you've got a word with a R in it, like "pero" or even "perro", start to say L when you get to the R.

that does work - it gets your tongue where it needs to be

it doesn't need to be there for pero though......... you can say that just like an English R

Born in Plymstock, ended up in Hooe. Still have two sisters there, one in Oreston and the other has just moved from Southway to Tavistock.

I find that most people do not seem to hear any ´r´s that I say unless I emphasise them more than normal. Classic an hour ago was when a lady that I have known for 6 years asked me my name and no matter how many times I said it she just did not get it, in the end her granddaughter told her and then she called me Rosa, so I gave up.

Rosemary

No, agree, but once you learn how to do it, it's hard to stop!

Well, it needs to be a little click of an r. You cant say the r like you would in English

yes, just a little - you really don't want to be rrrrrrrolling it though

Freedom fields is a housing estate now...

Small world.