Harley Davidson Toy Instructions?

I bought my son a 2002 ERTL Harley Davidson toy at a thrift shop. It is orange, plastic, approx 7" long, battery powered and comes with a removable rider. It obviously does something since it has batteries but there are no buttons and it doesn't do anything when you pull it back or push it.

I can't find one of these toys ANYWHERE online so I haven't been able to find any instructions for it. Does anyone know what the hell this thing does and how to get it to work? Maybe it's broken?

(it does have an on/off switch on the bottom but even in the "on" position it still does nothing)

Any help would be great, thanks!

You are missing the controller - I have one also and I did not know the rider came off. It is a unique toy but there is a steering controller that you are missing.