“Imagine a shopping cart – a vehicle that can stack – you can take the first vehicle out of a stack and off you go,” says Mr Chin an architect and engineer at MIT’s media lab and a member of Prof Mitchell’s research group. “These stacks would be placed throughout the city. A good place would be outside a subway station or a bus line or an airport, places where there’s a convergence of transportation lines and people.” MIT has been working on these ‘Stackable’ Cars for the for the past 4 years. They will generate zero pollution and will be customizable. A final design will be presented to General Motors in a few months, which will build a prototype. Something to look for in the near future.