I'm sure for people that are serious about cycling for fitness, competition, and even recreation, these kinds of questions are amusing since they've found cycling-specific clothing to be the only sensible thing to wear on their long, intense rides.
People can bicycle instead of taking a car, and it's often a good idea. If they had to change into a lycra super-hero suit to do it, that becomes a significant deterrent. People who commute by bicycle regularly can manage this by being prepared for their routine, but a person cycling for irregular everyday transportation doesn't necessarily want to commit to wearing a Lycra suit or trying to figure out how to change.
It is possible to wear casual non-cycling clothing and still ride a bike comfortably for more than six minutes.