Why wouldn't you just change your outfit before coming in to work? It's not that hard to change in your car.
Or better yet just take the day off? It seems like interviews at most places last for 5-8 hours anyways.
If you're interviewing at several different places within a short timespan, that could arouse suspicion.
How about just wearing your normal work cloths to the interview? Places that will ping you for not wearing a suit probably haven't made the best hiring decisions in the past.
I know this article is about US workers, where a lot of people drive to work, but even then, not everybody drives to work or has a car.