wow such a nice concenpt and well put together. I liked how frantic it would get after more than two lanes. 

some stuff I'd like being there better:

• feedback to mouse hover/click on gates to give a lively feel to it
• an important missing part is punishment/loss. or maybe I just didn't get there ? but it felt like if I don't even interact with the game nothing bad would happen.
• the shop UI is covering almost half the screen which takes the focus out of the gameplay, also it hides the lane bulding animation
• maybe add variuous cars with different speeds/sizes
• also upgrades were'nt clear enough on what they do (maybe intentional tho so that's okay)

overall a very fun idea great job

There are surprisingly many realistic aspects
The visual effect of the roads expanding is impressive!
I wonder if there will still be cars going somewhere even when everything turns into roads.