Lionel 
Power Passers Lane Change Challenge 
Slotless car racing
Here is a set I found that looks complete the cars ran poorly when I put power to them
they need a bit of clean up and oil to make them run sweet again I put power to the track and one of the lans worked
the other lane didn't I think it just a loose connection somewhere guard rail banked track look to be in pretty good
shape I tried to change the power pickup and lost one spring on the carpet but to make them run great they will both 
tune up kit and the springs come with them saw them here on ebay 
if you need more pictures please ask I will gladly send them to you
sold as is all sales final