Second in the "relative to automotive" category brings us to large scale motorcycles.

Yes, look at these....

All kits made by me, many years ago.

Joop those are fantastic, you are quite the builder. thanks for sharing

Here are two famous bikes with starring roles from Easy Rider. The Captain America and Billy Bike. 

The "Easy Rider" pair were on my 'to buy' list for it seems decades and there was always models that had priority over them. I saw them in the old FM store and they look great.

Another from Franklin Mint portrays what I think of as the classic highway bike...

Have you ever seen a two wheel 1957 Belair ?

FM's Harley V-Rod: my favorite HD motorcycle.  I realize that the V-Rod wasn't popular with traditional Harley riders, but that was the whole point.....to add a whole new customer base into the HD fold.  The double overhead cam (DOHC), liquid cooled motor was a collaborative effort between Porsche and Harley engineers.

Incidentally, what looks like the fuel tank was actually the air intake and oil filler cover. The fuel tank was under the seat area.

Ebbro's 1/10 Honda CR110.... a TT race inspired small displacement, high output racing bike from the early/mid '60s

From an unknown (Tamiya, maybe?) diecast manufacturer: A 1966 Honda RC116.  Found inexpensively on Ebay a decade or so ago.

I knew nothing of these bikes at the time and it took some internet searching to find out the bikes history (in order to print up the description for its display case).

Of note: the drive chain is made up of actual links. 

How about a relatively recent Vespa 150 ET4 scooter (AutoArt) and a 1948 Cushman Eagle from Unique Collectibles

@clifford-read Oh my god, I have never seen any of those except the HD V-Rod, I have the pewter version.

FM's 1947 Harley Davidson Servi Car:  FM's version came with some 'bling' including lots of chrome as well as orange pinstriping and trim. Servi Cars were basic commercial vehicles, usually with painted out trim so I've painted the wheel rims and headlight housing black as it ought to be, and removed the orange pinstriping. I've used plated jewelry wire to replicate the fine line fender trim that was generally used on all Harley fenders at the time.

@clifford-read  Looks great, you do fantastic work!

Here is a little custom version from Europe, Harley powered and show winning "Liquid Exite".