I thought he claimed he saw them two days before but in a nearby street, not Benaroon in MSM before the book came out. I know MSM can be unreliable.Apologies for quoting myself ..... I was just looking up some info in Jubes Book, I Catch Killers, and noticed that PS states that he saw those 2 cars parked there on Benaroon Drive two days before William went missing ....
From the Chapter "There's No Death That Is A Good Death" in I Catch Killers, by G Jubelin.
Interesting .....IMO...... That the 2 cars have been seen ..... and by someone else, bedsides FM .....
Someone living on that street, at the time, MAY, have had knowledge about them and have withheld it for some reason????
IMO and some speculation
I'm not convinced those cars were there. I grew up in an area very similar to Kendall and it is still the same, very unusual for anyone visiting to park on the street as the houses are all set back from the road. Very noticeable if anyone does park on the street. I agree with SouthAussie it may have been a police tactic.