Bugatti's 100P dream airplane to soar for the first time at the Mullin Automotive Museum

Ettore Bugatti, perhaps bored with building such extravagant symbols of single-minded genius like the Royale, devised a staggering work of aeronautical wonder that never saw the light of the day. Threatened by the twin insurmountable forces of deadlines and war, the Bugatti 100P never made it to the skies. Bugatti wanted to tackle the Deutsch de la Meurthe Cup Race -- the brainchild of one Henri Deutsch de la Meurthe, the wealthy petroleum businessman who birthed Europe's oil industry in his native France.

Porsche Battery – a mere £1200

The rather expensive Porsche Lithium Ion Battery Car batteries have been roughly the same shape and size – and utilised basically the same lead-acid technology – for years. They’ve got better, as you no longer need to top them up with distilled water at regular intervals (I’m showing my age now), and they are less prone to going flat. But that probably has more to do with alternators replacing dynamos than the batteries themselves.

Toyota FT-CH concept (w/ Video)

Toyota revealed the FT-CH concept at the 2010 NAIAS. Showcasing a possible future vehicle wearing the Prius badge, the four seat concept was created at ED2, Toyota's European design center in Nice, France. Measuring 3886mm in length, 1740mm wide and 1397mm tall, the FT-CH is 559mm less in overall length and has a wheelbase that is 152mm shorter than that of the Prius, but it is only 13mm narrower.