I see your bus bike racks…
…and I’ll raise you taxicab mounted bike racks.
Seattle’s buses all have bicycle racks mounted on them, but I have never heard of nor seen racks on taxis before seeing this one in Taipei.
On one hand, it seems like an excuse to burn petrol in order to transport an emissions-less vehicle. On the other, I can state from personal experience that there are times that putting a bike on a taxi can be really handy. The only other time I’ve been to Taipei, I got absolutely lost. I had to go to a police kiosk and ask for help back like a moron. They called a taxi to take me back to the hotel, since I was miles from there.