fast-track

A racetrack with optimum conditions for high speeds

A railroad for express trains.

The quickest or most direct method or path.

“Google welcomes the decision to not approve the fast track of Microsoft's OOXML.”

A high-pressure or intensely competitive situation, particularly one characterised by rapid advancement.

To progress something with unusual rapidity.

“The head of Sydney Airport thinks frequent flyers should be fast-tracked through security checks.”