@jhessy 20 May 2021 more from that month

Airport Robot: Changi Airport, Singapore I remember while waiting for my family in this airport, saw this robot sweeper roaming around. I'm so surprise that I'm staring on it the whole time. lol. First time I saw this kind of machine and it's also smiling, look how it stops when there's people near on it. I really enjoy watching it and killing some time sitting on the bench.