I don't really know how to go about this, but it's a subject near and dear to my heart and I want to be able to play a representation of it in-game. I'd be willing to work out a commission of the mod should anyone see this and want to take on the project.

In the 1930s, the Cincinnati & Lake Erie railroad utilized a new type of interurban railcar. While these cars could operate as trolleys and stop within cities and towns within Ohio, even going all the way into downtown Cincinnati, they were intercity cars that would use mainline tracks and run between cities like Cincinnati, Dayton, Columbus, and Toledo.

These cars were single cars with a parlor seating area at the rear, and were made of aluminum. They were painted in deep Cincinnati & Lake Erie Railroad crimson red.
Here is car 116 at the Branford Electric Railway Association[www.bera.org]
Better photo 1[lh3.googleusercontent.com]
Better photo 2[lh3.googleusercontent.com]
In 1930, as a marketing event, there was a race between a Red Devil and an airplane to demonstrate the speed and efficiency of the idea of interurban railcars and their potential. You could live in Cincinnati, and commute to work in Dayton, unheard of in 1930. Press photo[web.archive.org] and of course the money shot[www.croygenealogy.com].

After the C&LE Railroad went bankrupt in the 1930s, the cars themselves were liquidated and ended up across the plains of Iowa[www.croygenealogy.com] in a new livery as well as Philidelphia[www.trainweb.org]. Of the 20 cars originally produced, 6 went to Iowa and 13 to Leigh Valley, 1 car was lost in an accident prior to C&LE dissolving.
Car 118 in Cedar Rapids Livery[www.croygenealogy.com]
Cars 118 and possibly 114 at a station in Iowa[transphoto.org]
Leigh Valley Philly car LVT 1000[www.trainweb.org]
Another Leigh Valley car, LVT 1008[www.trainweb.org]
Alternative Leigh Valley Livery[ceramembersblog.wordpress.com]

Some basic information, relevant to Transport Fever 2:
Top speed: 90mph/140km/h - though during a publicity stunt in 1930 where a Red Devil raced a plane, the record top speed clocked was 97mph/156km/h
Passengers: 44 seats if in full passenger modification, 18-20 if operated fully as a parlor car.
Power: Electric. 4x 100hp traction motors
Weight: 48,000lb/22,000kg
Dimensions: 44ft, 9in length -- 8ft, 10in width
Standard gauge tracks

I appreciate anyone's time and attention to this post, even if no mod becomes of it, it's an interesting bit of history that I really enjoy and I hope someone found it interesting.