The part of Nimoy was originally written to be George Takei. Takei wouldn't do it because he considered it anti public transit; Takei was also doing commercials for the Milwaukee bus system at the time.
Conan didn't consider it anti public transit and isn't anti public transit himself, but he's a massive End of History lib, so ideology played a role in public transit being the punching bag.
The part of Nimoy was originally written to be George Takei. Takei wouldn't do it because he considered it anti public transit; Takei was also doing commercials for the Milwaukee bus system at the time.
Conan didn't consider it anti public transit and isn't anti public transit himself, but he's a massive End of History lib, so ideology played a role in public transit being the punching bag.