As a Utahn I have the, what I presume is rare, privilege of using a local classifieds site that literally every Utahn also uses. It's run by local news agency KSL (the SL is for Salt Lake)

https://www.ksl.com/auto/

Given this plus local dealerships I don't imagine that I would ever use a disruptor's product due to the basically 100% relevant market penetration and strong history of continued success of KSL's site.