This is an interesting example, from Germany in January 2012.
A German man has created a new website to arrange shared car trips with a twist – it’s targeted toward Muslims, and drivers can only offer transport to members of the same sex.
Called Muslimtaxi.de, the site is based on the same principle as other popular websites like mitfahrgelegenheit.de , which lets cost-conscious Germans arrange shared car rides.
Those interested in offering rides specify their gender, asking price and how many passengers they can accommodate. Potential passengers contact the driver directly.
…
In operation since late last year, the website has attracted its share of criticism. People have accused Reid of trying to create a parallel society and supporting immigrants who don’t want to integrate in German culture.
But Reid says the response from thousands of grateful riders has showed him he’s filling a niche.
“Many Muslim brothers and sisters complained that they can’t use conventional offers because the gender segregation stipulated by Islam is not implemented,” he added.
I do like to see the niches created by stupid bigotry filled by enterprising go-getters like that.