This is an exact copy of Conca of the late XIX century, recreated according to the drawings. This was the first public transport option in St. Petersburg, which had one or two floors. The two-story Concas were open, a spiral staircase led upstairs, they were cheaper. Concas traveled on special rails, they were driven by one or two horses.

The car was serviced by two people — a carriage driver who ruled horses, and a conductor, and it accommodated 22-24 passengers. This work was done only by strong men, because it was very difficult to control the car, especially when going up and down. Concas existed in St. Petersburg for about half a century. With the advent of electricity, they were replaced by trams.