Hello,
First, I have to say the game works fine, even for an alpha!
I manage to play for a couple hours without crash or major issues (despite being a lame businessman).
However, I tried two things which failed lamentably 
First: The Fit Steering Assembly is always waiting for cars to arrive. I tried to move it multiple times, to put it in various directions, but still it doesnât process any car. I think I tried every placement, the car is definitely just before that spot, but still doesnât process it.
I have attached a save game.
bug fit steering assembly.xml (485 KB)
Second: When I open a sub-menu in the left menu for construction, the icons have a gray â+â. It stays this way, even if I research the item in question.
It happened when I specialized in âFit engineâ: I couldnât unfold âFit Steering assemblyâ even if I researched it. Weirdly enough, the issue disappears if I reload the saved game.
Iâm not sure my explanation is very clear though
In the screenshot below, it happens with the âFit steering wheelâ item:
Thanks a lot!
Piratmac