I was about 10 too, 62 or 63, at the Auto Show in Chicago I saw a huge AMT Turnpike demo layout and spent most of my time fascinated by the cars - the public couldn't race them of course. That hooked me!
At the end of the year I got an Eldon Gold Cup set, probably the same one mentioned above with two vaguely Ferrarish sports cars, one of which broke within a couple weeks. But I liked tinkering wit the cars. The following year I got an Aurora Tjet set and that was mostly what I did for the next couple years, including building a landscaped track in the basement. Ran a bit with my brother and neighbors, but mostly by myself. In the meantime I discovered the local hobby shop about a mile from our house and they had a big 4-lane Strombecker track and a dragstrip. I did build a Revell Cobra from components, including an RP66 motor I had bought at Polk's in NY - but by the time I had the money for the other components and was finally able to assemble the car, I went on a Saturday afternoon for the weekly race and the car wouldn't work!
After that, it was the usual progression to better and better kits, then mostly 1/24 and finally scratchbuilding, rewinding, etc.
Stopped in 68 when I got sick then went away to college, but as soon as I graduated started haunting hobby shops again, winding up in 1974 in Seattle, where there were still 3 raceways and a pretty active scene. Stopped again when I traveled to Europe and moved to SF, thinking the whole thing had disappeared.
Then after living in Paris for 10 years, in 1992 I went to the Paris Hobby Show, where the French Slot Racing Federation had a demo track... been racing since then!
Don