Solved -PJ456 - 1 month 1 week and 1 day.

[Paul Jaray]

PLEASE READ THE FOLLOWING VERY CAREFULLY:

Note! Only one ID attempt per day, by AutoPuzzles member, is allowed in this puzzle.

* Multiple guesses with a 24 hour span will result in the second and subsequent guess being scrubbed, and you may be precluded from further participation in this puzzle.

* Once you post an ID attempt, you must wait 24 hours from the time stamp on that post until you make your next ID attempt.

Now, on to the fun  

I use to take a lot from books, now it's time to give some credits.
Here you are 39 books and 38 cars. I took 1 pic from each book but one.
You'll have to match them...some are quite easy, some others can be quite tricky, unless you have those books!

Only a complete answer will earn a point!
1 bonus point for the book that will be left out: ONLY IF YOU FIND IT BEFORE THE LAST BUT ONE MATCH.
1 bonus point for the reason of the title of this puzzle: ONLY WHEN ALL THE MATCHES HAVE BEEN FOUND.

(Thank you Otto   )

[Paul Jaray]

Note! Only one ID attempt per day, by AutoPuzzles member, is allowed in this puzzle.
and now the cars:

[Paul Jaray]

Note! Only one ID attempt per day, by AutoPuzzles member, is allowed in this puzzle.
and:

[Paul Jaray]

Note! Only one ID attempt per day, by AutoPuzzles member, is allowed in this puzzle.
and:

[Paul Jaray]

Note! Only one ID attempt per day, by AutoPuzzles member, is allowed in this puzzle.
and finally:

[Paul Jaray]

Here are the correct answers:
Book1 - Car5: Armbruster cyclecar pnegyesi
Book2 - Car1: Apollo Verona Arunas
Book3 - Car7: BRM Buggy jotage21
Book4 - Car2: No-named early Dune Buggy Arunas
Book5 - Car22: Craine 1908 pnegyesi
Book6 - Car8: Kastle KdF-Spezial 1949 Wendax
Book7 - Car30: Dandy 3 Wheeler 1923 João
Book8 - Car26: Limited Edition Californian Carnut
Book9 - Car18: Deutz Bugatti Limousine by Utermöhle 1909 Wendax
Book10 - Car34: Ducky buggy 1972 SACO
Book11 - Car27: Fergus Sedan 1921 João
Book12 - Car29: Fiat Visitors' Bus by Bertone 1975 Carnut
Book13 - Car31: Fiat-Tell 750 Woodinsight
Book14 - Car11: Sautenet JAP-engined three-wheeler Oswald
Book15 - Car25: Frisky Meadows by Vignale 1957 João
Book16 - Car12: Giannini 850 Coupè Frua 1964 SACO  
Book17 - Car6 : 1962 Gitane GT João
Book18 - Car32 Hotchkiss Gregoire Scale Model SACO
Book19 - Car23: JL 1981 Carnut
Book20 - Car24 Junior FtA 28/40hp 1907-09 Oguerrerob
Book21 - Car35: Little King 1958 Hugo90
Book22 - Car20 King Thing by Mike King 1970-1971 Oguerrerob
Book23 - Car21: Kroboth Favorit 1928 Wendax
Book24 - Car10: Lavazza Formula 850 faksta
Book25 - Car15: LaGrand Cheetah Mk 2 Woodinsight
Book26 - Car17: FES Briton Carnut
Book27 - Car19: Mallalieu Microdot 1980 Tom_I
Book28 - Car4: Morgan 1906 Wendax
Book29 - Car38: 1912 Trojan 10hp Prototype João
Book30 - Car14: Caruna Staccato franck.kegelart
Book31 - Car3: Scherling 1908  pnegyesi
Book32 - Car9: Reloj Miniatura jotage21
Book33 - Car13: Neumann-Neander Fahrmaschine Wendax
Book34 - Car37: Daimler 20hp coupè by North of England 1922 75america
Book35 - Car33: Mistral 1932 Wendax
Book36 - Car36: PGW BMW Wendax
Book37 - Car16: Delfosse Gordini-Porsche jotage21
Book38 - Car28: Buchet b5 10cv 1925 pnegyesi
Book39 - NO Car Wendax
Bonus point 'Puzzle's title' - Wendax
Wendax   9
Carnut 5
João 5
pnegyesi  4
jotage21  3
SACO 3
Arunas      2
Woodinsight 2
Oguerrerob 2
Oswald 1
Hugo90 1
faksta 1
Tom_I 1
franck.kegelart  1
75america 1

[Wendax]

Book 23 and Car 21, the Kroboth Favorit

See you tomorrow 

[Paul Jaray]

Don't be late! 

[João]

Book #11 and car number #27 : 1921 Fergus Saloon.

[Wendax]

Don't be late! 

Rather late than too early! 

[Paul Jaray]

Book #11 and car number #27 : 1921 Fergus Saloon.

Right!

[Tom_I]

Book #27, Weird Cars by Stephen Vokins, and Car #19 the Mallalieu Microdot from about 1980.

[Paul Jaray]

....and another one's gone....

[Carnut]

Book 8 and Car 26: Limited Edition Californian.

Can we guess at the reason for the title of the puzzle or do we have to wait until all matches found (bearing in mind what you said, but perhaps you mean you'll only award the point at the end of the puzzle)?

[Paul Jaray]

Book 8 and Car 26: Limited Edition Californian.

Can we guess at the reason for the title of the puzzle or do we have to wait until all matches found (bearing in mind what you said, but perhaps you mean you'll only award the point at the end of the puzzle)?

Correct!
It was one of the tricky ones...
You can guess the (quite easy) reason for the title after the last match will be found.  
I will award points at the end of the puzzle.

[pnegyesi]

pix5, book1: István Zsuppán's Magyar Autó and the Armbruster, a JAP-engineed cyclecar from Győr
Okay, I was the editor of the book. But hey, I can see other books which were edited by other AutoPuzzle members here

[Paul Jaray]

pix5, book1: István Zsuppán's Magyar Autó and the Armbruster, a JAP-engineed cyclecar from Győr
Okay, I was the editor of the book. But hey, I can see other books which were edited by other AutoPuzzle members here

What took you so long? 

[woodinsight]

Book 13 & Car 31 - Fiat-Tell 750

[Paul Jaray]

Book 13 & Car 31 - Fiat-Tell 750

Another hard one is gone...

[SACO]

Book 10 & car 34 : 1972 Ducky buggy ( VW kafer base )

[Paul Jaray]

Correct!

[Paul Jaray]

SACO, read the rules in the 1st post of this puzzle, please!
Only 1 guess per day is allowed.

[SACO]

Sorry !

[João]

Book #15 and car number 25 : 1957 Frisky Meadows by Vignale.

[pnegyesi]

Book5, pix22: Gulltraps' Australian Cars from 1879 features the 1908 Craine, built by T.C. Craine a Melbourne coachbuilder