I've been using Autocad for more than 10 years. It's a great software and it has unlimited applications. If someone is offering to educate you and give you a job...go for it.
You could also further your education in the engineering (or about any other) field to really put your Autocad skills to work.
What I really like about drafting is that it's applicable to just about everything. Machining, like the guys above have said. Civil drafting...stuff like roads, utilities, civil planning, maps etc. Residential & commercial buildings...not to mention architecture, which is a whole filed unto itself. Manufacturing of just about all types, starts with drawings...someone has to make those drawings...so yes, there are lots of jobs using Autocad or similar software.