National jeep NASA designed (8)
I believe the answer is:
japanese
'national' is the definition.
(I've seen this before)
'jeep nasa designed' is the wordplay.
'designed' indicates anagramming the letters (designed with the letters).
'jeep'+'nasa'='jeepnasa'
'jeepnasa' anagrammed gives 'JAPANESE'.
(Other definitions for japanese that I've seen before include "Native to Tokyo, say" , "Person form Osaka, say" , "One from Tokyo, say" , "From the Land of the Rising Sun" , "Person from Tokyo, say" .)