It turns out supersonic aircraft are just like buses: You wait years for one, and then two come along at once.

Almost eight years after Concorde touched down for the last time, plane manufacturers and designers at the Paris Air Show have unveiled rival "son of supersonic" concepts.

The first, aircraft manufacturer EADS's Zero Emission Hyper Sonic Transport (ZEHST), will be powered by biofuel made from seaweed, carrying passengers above the Earth's atmosphere and dramatically cutting flight times.

 Image credit: Airbus S.A.S.
Scared of heights? Then don't look down…

The plane manufacturer has released pictures of a futuristic jet ahead of the Paris Air Show. The images show a transparent cabin, allowing passengers to enjoy a much wider view while on a flight
And if that wasn't unusual enough, the innovative design also aims to offer services with a difference on board, with personalised zones replacing traditional cabin designs.

World's most luxurious airport lounges

From ‘space pods’ to the swish hangout with a stream running through it, we list the airline waiting rooms so plush you'll positively enjoy the phrase 'flight delayed’

Virgin Atlantic Clubhouse

 Heathrow Airport
Bubble chairs, pink walls and the poolside lounge make you feel groovy, baby, rather than a weary traveller. Check in early to make the most of the 14 metre-long cocktail bar, a Cowshed spa and Bumble and Bumble hair salon. But, if that sounds too exerting, relax in one of the suede day beds in the Sky Lounge, and watch the planes take off with stellar views of the runway.