fast track

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A course leading to rapid advancement or change, as in a career.
• noun A course that leads to early consideration or review.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A race track with optimum conditions for high speeds
• noun A railroad for express trains.
• noun The quickest or most direct method or path.
• noun A high-pressure or intensely competitive situation, particularly one characterised by rapid advancement.
• verb To progress something with unusual rapidity.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a rapid means of achieving a goal