Never used them (don't go to Vegas) but you can check with the source if interested.
http://www.theeroticreview.com/discussion-boards/k-girls-113/re-cll-will-always-be-my-go-to-in-lv-39739?page=

 
Or do a search for transportation car ride and set the search to any.

They are my go to in Vegas. $40 round trip. Pay on the way back to your hotel. Super convenient.

Confirm that. Very easy

Just ask the booker if they offer "korean Taxi"?

It's undergorund korean taxi services.