A GoCar in Lisbon. Photo by Christine Zenino.

Your weekly roundup of the hottest travel links across the net:

1. Cities can look and feel completely different whether you’re walking it, driving it, biking it or whatever else. Here’s a fun account of one traveler’s experience navigating a foreign city using a number of different kinds of transportation. The GoCar Tours in particular, seem like a novel way of exploring some of Lisbon’s narrow streets.

2. Google has launched the initial version of its flight search engine, which is designed to help travelers quickly find the most suitable deal. The engine – which uses the ITA software some of you might be familiar with – also lets people explore destinations based on how far they want to travel and how much they’re willing to spend.

3. Transsexual Australians will now be able to carry passports labeled with their preferred gender. Many had previously been embarrassed or delayed at airport checkpoints because of confusion over their sex.

4. How’s this for upscale travel? A travel agency in Dubai is advertising a 10-stop, 22-day world tour that will take sightseers to the Taj Mahal, Pyramids, Bali and more, all in a private jet. The cost – a mere $68,000 dollars. According to the travel agency there’s been plenty of demand.