Hamburg  - Will millions of electric eco-cars one day solve our climate and energy problems? If batteries are charged with renewable wind and solar energy, electric cars are currently the cleanest on the road. But most batteries are made of lithium, a finite and expensive natural resource, which prompts sceptics to question the ambitious plans of many car makers.

Some analysts are already sounding warnings that the latest lithium-ion battery technology will at best occupy a small niche market. Lithium is a limited natural resource with most deposits in Bolivia, Chile and some in Australia and Tibet.

Geneva  - British sports car manufacturer Aston Martin unveiled the DBS Volante convertible, based on the DBS Coupe that celebrated its market debut in 2008 with a 517 hp power package, in Geneva.

The open-top version has a folding cloth top that opens and closes in just 14 seconds and can be operated at a speed of up to 48 kilometres an hour.

Crewe, England  - Bentley has revealed its Continental Supersports, describing it as the fastest Bentley ever built with 630 hp engine that propels it from zero to 100 km/h in 3.7 seconds, prior to the Geneva Motor Show.

According to Bentley, the concept began with an experiment to reduce weight by 110 kilogrammes and increase power for the Continental GT Speed using lightweight materials. In addition, the challenge was to use FlexFuel technology, using a mixture of petrol and ethanol, without compromising supercar performance.

Munich  - BMW showcased in Geneva a special BMW X3 rescue

The world's cheapest car, Nano is expected to hit roads from Sanand plant in Gujarat by end 2010, according to top officials of the company. Large scale construction activities for buildings and pre-engineering structures are going on at full swing at Sanad, near Ahmedabad.

Luxury car maker Mercedes-Benz India would recruit more number of professionals, increasing total headcount of workforce to four-fold, at the research and development centre in Bangalore in the next few years and will invest around Rs 150 crore with the help of partners to expand its business network in the country.