As for Retro how about doing it in the dos edit tool?
Or to be even more retro
I know this isn't a business card (strictly speaking) but some of you may like it...
You suck at parking. (Leave under wiper blade) Business Cards | Zazzle.co.uk
or possibly these... Joke/Warning parking tickets
My friend uses these in his flat's parking as he has a reserved space he pays for and all his neighbours don't...
I'm definitely getting those for disabled spaces. My brother is on disability and when we go to supermarkets and co, the amount of fat doobsters (I might have just made that word up) that park in a disabled space and get away with it is astonishing. I understand how it must get on the nerves of parents as well. I can proudly say I've never parked in a non-standard space.
Edit: This is getting really off-topic now!
Sysman please do some for mother and baby parking spaces :)
Awesome! I'm definitely stealing this one - sorry :)
Don Ho [Creator of Notepad++] business card:
Link: Notepad++ Make Your Business Card with Notepad++