25$ free driving credit from Zipcar

Zipcar is the largest US car-sharing network (it has recently been acquired by Avis Budget Group - see this Reuters report).

An overview of the way Zipcar works can be found in these stories from the New York Times or the CNN.

They also recently started expansion in Canada and in Europe (UK, Spain and Austria).

With their current promotion, you get 25 USD credit when applying for a membership. Follow this banner to go to their dedicated page:

Remember: drive safely!