That is exactly what I was asking about. Talking tapes. Thank You!!!
I called my brother yesterday to ask him about it.
He had an STP rocket car. (Remember STP oil?) They were the king of rocket cars. The one he got had a rip cord of course, was shaped like one of those salt flat rocket cars that were breaking the speed of sound in those days, and also had a talking tape slot on the other side of the rip cord hole.
One tape made race car noises and the other said "ready, set, go!!!" when you ripped it.
It also shot sparks out it's ass for the first 10 runs or so, then the spark thing wore out. So my brother went to the Western Auto store and got a couple model rocket rockets. Bored out the back end of his car, jammed them in, and built a fire behind it to get the car burning and set off the rockets.
It did about a half dozen loops at 1,000mph and then burned up.
Funny part is that he did odd jobs for months just to get that car. Raking leaves, cutting grass, resetting brick sidewalks, all that stuff. That's all we did when we were kids is work. We were entrepeneurs because we got bored easily.
We also liked to set everything on fire, because that's what Evel Knievel did.
If it went fast, it had to be on fire and ultimately blow up. Made perfectly good sense.