Hi, Success in any field depend on interest of the person in that field.
Automobile Engineering is a branch of engineering that deals with designing, manufacturing and operating automobiles. It incorporate elements of mechanical, electrical, software and safety engineering as applied to design and manufacture buses, bikes, trucks and other vehicles and machines.
To become an automobile engineer, After completing Class 12 from the science stream one must have a BE or B.Tech. in automobile engineering.

Yes there is good scope in it. Go ahead!