Can keep a small box of kitty litter on front seat for bathroom needs. If they ever go into a high speed roll, cats will be able to land cab back on its four wheels. Names like Mittens, Frisky, and Bailey much easier to remember than those difficult foreign names. CONS Same language problems as with current cabbies. While speeding along, cat might see a small piece of paper and go speeding after it.
Cats never come when they're called.
Cat might try to crash cab into dog runs in an attempt to take out as many dogs as possible. Annoying habit of coughing up fur balls when stopped at light. On cold days, cats might spend whole day parked over a warm, steaming grate. Cats might not care if they get into accidents, thinking they have a lives to spare. Always turning the radio up way too loud when cat food commercials come on.