Pondered over this for the last 2 days!!
Clue - Some of the fastest flowers on the road? (7)
? ? ? ? S ? S
The first letter could be an L as the clue is Reverse vision made in anger (4,4) I have look back, but am none too sure!
No.5 (S) clue is Houseplant 'in the rapids', as it were. I have the answer A(s)pidistra
No.7 (S) clue is Pasta that's screened for the Western market? I have the answer (S)paghetti
Could the answer be LORRIES - but how!!!