A worker dusts the front windshield of the new Bell Nexus 4EX air taxi concept on display in No …

A worker dusts the front windshield of the new Bell Nexus 4EX air taxi concept on display in North Hall for CES 2020 Day 2 at the Las Vegas Convention Center on Wednesday Jan. 8, 2020, in Las Vegas. (L.E. Baskow/Las Vegas Review-Journal)