After many years of planning and difficult talk, a string of electric cars that are really going on sale - as opposed to being just ideas - will probably be on show when the Paris motor show opens for the public on Saturday.
Nissan is currently taking orders for its pure electric Leaf model, which includes a variety of 160km.
Common Motors (GM) will begin promoting its plug-in electric automobile having a range-extending petrol engine inside weeks.
And Toyota's plug-in petrol-electric Prius hybrid will go on sale next year.
But it's not clear which solution will appeal the most to automobile consumers, who're increasingly spoilt for option.
So the automotive behemoths are fighting tough to persuade customers that theirs is the most effective way ahead.
Nissan and its associate Renault are the most vocal advocate of pure electric cars, insisting that so as to prevent international temperatures from rising by much more than 2 degrees Celsius, automobile emissions need to be reduced by 80-90% in all new automobiles.
Nissan Leaf Nissan believes zero emission motoring may be the answer
"The only method to do that is 100% electric motoring," Hideaki Watanabe, managing director from the Renault-Nissan Alliance's zero emission company, tells BBC Information.
Mr Watanabe is dismissive from the solution offered by rivals Toyota and GM.
"Is a plug-in hybrid zero emission? No. And may be the system low cost? No, since you have acquired two systems," he reasons.
The world's two biggest carmakers, in flip, insist electric cars are vastly inferior to plug-in hybrids simply because of their restricted variety.
But that is exactly where their agreement ends.
GM's Ampera, named Volt in the US, is an electric automobile having a variety of 60km.
The automobile, which will go on sale inside weeks, is kitted out having a tiny petrol engine, which primarily acts as an electric generator that feeds energy for the electric motor and tops up the batteries although driving - thus extending the variety to much more than 500km.
GM Ampera The Ampera will probably be used as an electric automobile most from the time, GM states
"Our intention is always that the vast majority from the driving in these automobiles is done with electrics only," explains Nick Reilly, president of GM Europe, in an interview with BBC Information.
"But the magnificence from the variety extender is always that when you do want to go on a lengthier journey, you are able to."
The variety extender solution has turn out to be a well-liked option with quite a few supercar makers, which includes Jaguar which is showing a concept of a fuel turbine-electric hybrid, and Fisker Automotive, which will begin promoting its Karma extended variety electric car next year.
"Cars are about three issues; enthusiasm, magnificence and independence," chief executive Henrik Fisker tells BBC Information.
"You might be able to get enthusiasm and magnificence in an electric automobile, but you don't get independence."
Toyota's plug-in Prius, which will go on sale next year, offers a subtly different solution.
The car's variety electric variety is just 20km, which is enough to cover about 80% of drivers' daily requirements, Didier Leroy, president of Toyota Motor Europe, tells BBC Information.
Toyota plug-in hybrid automobile Toyota's solution is much more efficient than individuals of rivals, Mr Leroy insists
Therefore, there is significantly less of a need to carry around a heavy and pricey battery, he reasons.
As soon as the battery is empty, the automobile operates like a conventional petrol-electric hybrid, which is much much more efficient than the variety extender, Mr Leroy insists.
Reduced emission cars
Electric motoring, in whatever kind, is obviously turning out to be portion from the automotive landscape, although all producers agree that the internal combustion engine will remain the main source of energy for cars for many years, maybe decades, yet.
Contemporary petrol and diesel engines are much significantly less dirty than they used to be, nonetheless, with producers being spurred on by ever-tighter emissions laws throughout the world.
Visitors for the motor show will see masses of tiny cars that claim to give off significantly less than ninety nine grammes of carbon dioxide per kilometre (g/km)!!!
And even fairly big crossover cars that resemble 4x4 automobiles frequently give off just 135g/km.
These cars signify remarkable improvements made by the motor industry in current many years.
Nevertheless, the Intergovernmental Panel on Climate Alter stipulates that new cars need to give off significantly less than 45g/km on common to prevent international warming from working amok, Mr Watanabe states.
So no one on the Paris show is stating enough has been done.
why women are better drivers
senior drivers pay more for car insurance
young people buy fewer cars