the oracle group organized the discussion for their weakly interview program, in the cafe with mocha. for more information visit theoraclegroup.net and click on the "show" tab. >> deborah gordon in 2009, how many cars or on the road in the worlded . >> there are just over a billion cars on the world's roads, the not just cars, motor vehicles, cars, trucks, buses, lots of scooters and two wheel,in asia, and on the road today. >> how many in the u.s. >> in the u.s., about 300,000. >> 300,000 or 300 million. >> i mean 300 million. >> that is too many. >> is it too many? this is the issue, the issue is if we want -- if what we have, the mobility we have, which is wonderful, if we want to replicate that for the world, we can't do it the way -- the world can't do it the way we have done it. in terms of oil, internal combustion, there is not going to be enough air, enough in terms of climate change, enough oil, to do what we have done for -- growth towards 2 billion cars. >> has the world tried to emulate the u.s.? >> it's at a crossroads, china, india and, brazil, russia, most of asia, are