Inspired by some tiny cars I saw on Flickr and Rebrickable, I decided to make my own series of compact cars. The result:
Compact Sports Car by Brick Random, on Flickr
Compact Familiy Car by Brick Random, on Flickr
Compact Police Car by Brick Random, on Flickr
More pictures are available in my Flickr album. I've also made step-by-step PDF building instructions for these cars, These are available for free on Rebrickable.com:
Compact Police Car
Compact Family Car
Compact Sports Car