If one of the cars has no people in it and the other car is being driven on the road.
return cars ;return people ;return #2 in  #1 ;return number of  #3 for each  #1 ;return #1 where  #4 is equal to  zero ;return number of  #5 ;return if  #6 is equal to  one ;return the  road ;return #1 being driven on #8 ;return number of  #9 ;return if  #10 is equal to  one ;return if  both  #7 and #11 are true
['select', 'select', 'filter', 'group', 'comparative', 'aggregate', 'boolean', 'select', 'filter', 'aggregate', 'boolean', 'boolean']