German car pioneer (7)
I believe the answer is:
daimler
'german car pioneer' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for daimler that I've seen before include "Make of car" , "Car manufacturer" , "Red Liam has a swanky car" , "A milder form of a posh car" , "German car pioneer, lead rim (anag.)" .)