Celebrity's in high-speed transporter (8)
I believe the answer is:
starship
'high-speed transporter' is the definition.
'celebrity's in' is the wordplay.
'celebrity's' becomes 'stars' (I've seen this in other clues).
'in' becomes 'hip' (both can mean fashionable).
'stars'+'hip'='STARSHIP'
(Other definitions for starship that I've seen before include "Sci-fi space vehicle" , "Captain James T. Kirk's command" , "Space traveller" , "Enterprise, possibly" , "Enterprise perhaps" .)