Since there were no airport, outdoor, or indoor photo sightings of race evidence or the final 3 teams, could they have arrived in Las Vegas and then took a charter to a more rural area of Nevada such as Lake Mead, ghost towns, or even the possible Arizona?
Also, we have never had a repeated final city location before starting from TAR12:
TAR12-23: Anchorage, Portland, Maui, Las Vegas (now speculated), San Francisco, Los Angeles, Miami, Atlanta, Honolulu, NYC, Washington D.C., Juneau