AT THE O2 WIRELESS Festival in London, the firm announced its latest, 19 months in the making, mobile phone The Cocoon.How many cars on the road get 50 mpg in regular driving? The mileage goes down to maybe 44-45 mpg with 4 passengers. The instrumentation on this car takes some getting used to, but after a short period of time you realize that while unusual, it is convenient and mostly of a safe design.What do you get when you combine the engineering and design knowhow of Audi and Lamborghini?An exclusive--and screamingly fast--supercar.