Download the full episode as m4a (m4a is great, it contains chapters, links and images if your player supports them) or mp3 to put on your MP3 player.

In this week's Gizcast, Geoffrey Baird speaks with audiologist Anthea Arkcoll about a new type of hearing aid that bypasses the ear altogether and uses bone conduction technology to send a direct signal to the auditory nerve. Then Loz Blain wraps up with some of the most interesting electric and green car concepts the Giz team are drooling over in Frankfurt, and a quick look at a medical device that could give doctors a new way to fight stubborn cancer tumours.

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Further reading on the topics covered in this week's podcast (in the order they're mentioned):

Lead Story: This week's lead story, on Cochlear's bone conduction hearing assistance implants, hasn't been published yet. We'll get it online within a few days!

• Lamborghini's 1.1 million Euro Reventon
• Citroen's REVOLTe concept
• Volkswagen's electric E-Up! concept
• Volkswagen's bizarre L1 tandem 2-seater diesel hybrid - that gets 170mpg
• Renault's range of upcoming electric cars
• Audi's muscular e-tron electric

• The IsoFlow Infusion Catheter - targeted chemotherapy that sidesteps the side effects

The other podcasts Loz recommended were Dan Carlin's Hardcore History, This American Life, by Chicago Public Radio and The Moth Podcast - true stories told live on stage. Of course there's plenty more - so let us know what you're listening to in the comments below!