Graham hodges, a former cabby himself, said he once drove his taxi shirtless on a particularly hot summer day in the 1970s. his excuse? no air-conditioning. i was told by a cabby that if i didnt put a shirt on, id get a ticket, he recalled on the telephone recently. told of the proposed rule change, mr. hodges, now a history professor, lamented a lost era in the annals of cabby clothing. people would frequently wear t-shirts that would state antiwar expressions; you just dont see a lot of that these days, he said. im not sure if thats a good or bad thing, he added. it would be nice to see cabdrivers expressing their opinions again.