The photos and brief video below show a "compressed" 1:43 model of a 1957 Fiat 642 Bartoletti race car transporter, bashed from a Superstreets delivery truck. Like Railking and Lionmaster locos, this Bartoletti is compressed more in length, compared to scale, than reduced in height or width, for much the same reason: so it can go around tight curves, in this case 'Streets D22 and D16 curves. A "full length" two-axle model of the Bartoletti (first photo below) would have too long a wheelbase to go around either curve.
In the '50s and '60s the big Fiat Bartoletti transporters were used not just by the four Italian Formula 1 and road race teams, but most of the private and US teams racing in European series as well. They are quite handsome, and seemed to always be in the background of photos of my heros - guys like Phil Hill and Carrol Shelby (Shelby drove Maseratis and Astons before he invented the Cobra) that appeared in Road and Track and Sports Car Graphic.
The first photo shows a 1:43 Exoto model of the Bartoletti - what I hoped my model would look like - and the vehicle I started with, the Lionel Superstreets step van. I used the chassis unmodified except I replaced the motor with one roughly twice as large/powerful, and with a flywheel, for smoother, slower running. There is no gear reduction though, so this will not run nearly as slow as my city buses, but it runs well at city speeds.
The result is, well . . . short.
My apoligies for the short and rather dark video. My Nikon, which I use for videos but not stills, seems to be acting up today.
This was a fun project thar resulted in a very tidy little model and a unique 'Steets vehicle. However, I found out after the project was well under way that later versions of the Bartoletti had a dual rear axle - sometime in the future I plan to convert a full length model to 'Streets, making the rear double axle pivot as I do on my tractor trailers, so it will handle tight curves. But that can wait. Done enough model car bashing for a while.
I can actually remember seeing those at and around circuits in England back in the '60s. Please remember to be careful of headroom clearance on your tunnel section though. 
