Chaparral Tether Car

I haven't touched a Cox or other similar product in 35 years but now the grandkids are ready. I just bought  Chapparal tether car with an 049 in it. I haven't received it yet. The pictures show an eyelet in the front and rear of the frame implying that it runs in a straight line. Is that true? If so then what shuts it off at the end of the line? Does anyone have the instructions?

I can't include a link since I am a new member but it was eBay item 363995101155. If you do an advanced search on that sold item number you can find it.

Instructions from a similar model show straight line running, you would probably have to limit the fuel.
There is a wire that fits into the chassis for circular running, probably a better way to go.