Its a search engine that pulls ads from other sites.
https://cars.trovit.com/index.php/co...isUserSearch.1
Much like
https://www.cars-on-line.com/shelby.html
but not as sophisticated.
I should add that any ad you see on Trovit that is pulled from "US Classified 4 All" is bogus and I wouldn't request additional info as you'll undoubtedly end up on several mass mailing lists and telemarketer phone lists.
The super low prices are a troll.