This cool Lotus Indy Car toy powered by a .049 gas engine was released in 1965. Wen-Mac appears to have made primarily model gas airplanes but did produce some pretty cool racing cars among other vehicles. Check out the very cool Ford GT 40.
There don’t appear to be many available on the used market, perhaps due to most of them being destroyed by enthusiastic youths over 50 years ago. The few I have located seem to sell for about $100 or so. This certainly would be neat in the Lotus man cave.