Regarding Course in masters

Hai I have done my Electronics and Communication Engineering and i want to do masters currently i am working in automobile sector and i am not getting what to study in masters which course etc.. and i mostly interested in aviation field and automobile field and i am not getting which is good and which is better please suggest me the path and which course and country is good to study and suggest is there any better than these courses all your answers are helpful for me to take a step. #masters #bachelors #ms #studyabroad #Engineering