+1 I had seen this video of cars in a circle without any bottleneck, it was quite an eureka moment - https://www.youtube.com/watch?v=7wm-pZp_mi0 https://www.yo

+1 I had seen this video of cars in a circle without any bottleneck, it was quite an eureka moment - https://www.youtube.com/watch?v=7wm-pZp_mi0 https://www.youtube.com/watch?v=7wm-pZp_mi0