Parade of emissions-free electric cars in 2011

A new genre of electric cars slicker and emissions-free have arrived in thousands as the two largest manufacturers USA and China as well as many others blaze the trail of greener technology. 'A highly charged' motoring decade is on us, a fan enthused.

The idea of recharging an electric car at home at minimal cost and never again having to visit a filling station is enticing. The swanky sales pitch is compelling as manufacturers show off their new wares.

The battery-powered Nissan Leaf or Renault Fluence, vouch they can give you 160km (100 miles) or so, before the battery is recharged overnight.

The Chevrolet Volt's battery has less than half that range, but it carries a tiny petrol generator to get the battery charged, which gives the car another 480km.

Emissions-free car. Picture courtesy: Google

Meanwhile, China announced recently that the annual production of electric vehicles will hit one million units by 2020 heralding the emergence of world's largest auto market for new energy vehicles.

Outsmarting the petrol car

The pioneers, Toyota Prius hybrid and the Elon Musk's Tesla all-electric sports cars of a decade ago suddenly seemed dated. There are some newer dexterous micro cars with just two seats and ranges of only around 50km for short runs on city streets.

Carmakers are working to outsmart the combination of cheapness and efficiency that a petrol-powered car offered the average car buyer. Methods to shorten the recharging time of the car battery with better technology like super recharges are being planned.

There are also attempts to provide the accessories and outlets to service the new cars in order to reach the optimum economies of scale leading to mass production.

Is the showroom patter misleading? Some have posed the question. As salesmen will be quick to point out, 98 percent of the time people in the West do only short runs-the daily commute, trips to the shops and to pick up the children-all well within the range of most electric cars.

But that final two percent of journeys presumably includes longer trips when people pile into a car and head off either on vacation or a family event. And even the relatively short ranges, a cold or rainy days, wet night when lots of electrical systems are running and the vehicle is laden with passengers and luggage, a car may lose around a third of its promised range.

Critical assessment

EV generation is a huge leap forward for the car industry, but many are calling for a critical assessment of the proponents' claims about how green the technology is and whether the cost of subsidizing each new car-about $ 7,500 in UK and higher in USA are worth the cost.

According to Richard Pike, chief executive of the Royal Society of Chemistry, replacing all of Britain's cars with subsidised electric cars would cost the taxpayer Sterling Pounds150 billion and with Britain's current fuel mix, cut Co2 emissions from cars in UK by about two percent. For the same money, Britain could replace its entire power-generation stock with solar cells and cut its emissions by a third, he argued.

A universal carbon tax as the most efficient way to cut greenhouse-gas emissions is still a decade away. Copenhagen summit just adopted broad policy lines. Guidelines were debated intensely at the Cancun conference recently.

Electric cars plus the carbon tax seemed the way to go. Until such time the world opts for such a move, electric cars would be subsidized. The electric cars are a good way of reducing emissions; but a carbon tax would enable them to flourish.

Meanwhile, Shenzhen city in China plans to have 35,000 electric cars on its roads within three years. There is no stopping that trend once the electric vehicles arrive in all their splendour. We are now witnessing a paradigm shift in transportation.