נסיעה לתורנות בשבת

I have 2 questions for you and the team.

This last Shabbos I had a shift starting a 2PM. I ordered a cab before Shabbos from a cab company to pick me up as my Rabbi here said I should. Guess what – the cab driver was Jewish – I was so upset. I am not really sure of what to do now – should I have taken the cab or got out? how else could I have got to the hospital? Can I call that company again (most of their workers are goyim I am sure), Should I ask for a black or Asian cab driver next time (this may be seen as a form of racism)? Any thoughts?

Also do you have a source article in a medical journal stipulating that giving analgesia to patients who are ill and inevidabley going die, will not shorten their life?