Glad you have it working as you want it.
Go ahead and upload- you don't need permission for that
. You'll have to wait and see if anyone can duplicate your rig- that depends on the time people have free, and of course if the have the components handy. You need to attach a schematic btw, so folks can see what your rig actually is.
edit.... I think I have suitable components, so yeah if I get a chance I'll see if I can hook it up and set it. I don't have RC cars though, so I'd just have the two lines maybe 50cm apart on my desk and test with my hand.