### Clue: PC way to trade green car adopted by setter (1-8)
### Answer: E-COMMERCE 
 ### Explanation: Definition: PC way to trade
 ECO-(prefix signifying something that is related to environmental conservation/green) + [MERC(short for Mercedes-Benz, the German car marque) **contained in**(adopted by) ME(the setter of this crossword, using the self-referential pronoun)].
Defn: … ie. using the PC/electronically.