OG11-50(verbal)

hehu116

50．Domestic automobile manufacturers have invested millions of dollars into research to develop cars more gasoline-efficient even than presently on the road.
        

(A)  into research to develop cars more gasoline-efficient even than presently on the road

(B)  into research for developing even more gasoline-efficient cars 0n the road than at present

(C)  for research for cars to be developed that are more gasoline-efficient even than presently the road

(D)  in research to develop cars even more gasoline-efficient than those at present on the road

(E)  in research for developing cars that are even more gasoline-efficient than presently on the road

cars even more gasoline-efficient than those at present on the road 这个结构是比较状语从句修饰cars吗？

hehu116

请教这个句子的结构，谢谢！