Ok, after taking those issues into the consideration here is another idea that fixes all of the bad things from the previous attempt. This one is created with the assumption that courses don't have to exactly identical. In this case right side has a bit longer straight then the left side, but that can be even out later and make them that both sides run similar times as we always had it. This also incorporates all of the important things for the ProSolo competition which includes drag racing start with two cars going down at the same time! It also allows pretty quick return for the next set of runs!
Let me know what you think of this idea. The point being here is that this kind of setup could be used on some other sites as well, as long as it gets accepted that courses don't have to mirror each other 100%. I think this make sense since you are aware (unless you race and AWD car against bunch of RWD ones 
) of the car next to you only for the first 3-4 seconds and then even when they are close by there is no way to see them. If you do, than you are more then slow!!
Fedja
ps. note that I left the proportion scale on the picture so people can see the real sizes of everything.
95 AWD #34 SM or ESP
"Let boost be with you...
...and bring some timing too!"
http://www.geocities.com/esp_er