Electric cars are nothing new, but it's only been recently that they have begun to be remotely practical. And like any technology that is aggressively pursued, two things are bound to happen.
First, the technology will improve and become more diverse. Second, the technology will become cheaper and easier to use. Television is a good example. Back in 1969, you could buy a 25" Curtis Mathes color TV with a record player and a stereo, but it would cost you $850. That is the equivelent of $5,400 today. (source: Inflation Calculator dot com) These days, you can buy a hi-def flatscreen of moderate size, (but bigger than 25") with a modest home theater system for LESS than $850. And that would be the equivelent of less than $200 easily back in 1969. This proves as technology gets better, it often gets cheaper. The same will happen with electric cars, because like TV's, they are a universally marketable item for most people.
The price of fuel, and the ongoing decline in worldwide production, (eight of ten of the largest oilfields on Earth reached peak oil more than twenty years ago) will drive the effort to make electric cars both practical and affordable.
Here are some things you might not have considered regarding electric cars:
1) The two main problems with them are range and cost. But as the tech improves, those problems will undoubtably be solved. It's market-driven. As the tech gets better and the cost gets cheaper, the prices will drop. Just like the prices on energy-efficient bulbs will drop as the US goes mainstream on getting rid of incandescent.
2) It's going to get a lot quieter when electric takes over. Imagine a freeway of nearly silent electric cars. Instead of car noises on the freeway, all you will hear is futuristic humming and probably other peoples' stereo systems.
3) The methods on how you provide power for your electric car are going to become a LOT more varied. They will provide you (or you can purchase) matching cord connections that will charge your vehicle from almost any electric source. This will include things as varied as solar panels at your house, any electric outlet, maybe even a charger outlet built into your exercise bike. While you do your workout, your car is charged. If you don't drive much, they could just put solar into the roof of your car and maybe it's charged up in a week. Depending on your location, even a small wind turbine in your backyard is possible. No doubt people will come up with many ways to charge their vehicles without paying the power company or a charging station, or at least avoid it whenever they can.
4) Battery life? The Toyota Prius, a hybrid not strictly electric, has a battery pack. It came out in 1997. Toyota claims that not a single battery pack in a Prius has ever needed replacement because the batteries just 'wore out' and wouldn't take a charge. (Replacements due to accident damage are not counted) Some cab companies have put more than 400,000 miles on a Prius. The most famous is a cab company in Toronto. And battery tech is getting better all the time. Duracell, a smaller example, recently released a version of their household batteries that claim to hold their charge new for ten years. This type of tech, increased capacity and longer life, is bound to improve for the batteries used in electric cars.
5) Our two biggest trade deficits are imports from China and the importation of foreign oil. Getting off the foreign oil and converting the USA to mainstream electric and renewal energy to produce that electric power will boost the US economy to record levels, and decrease CO-2 emissions.
It's the future. We didn't get the flying cars we were promised back in the 1960's, but we might be able to get off the oil junkie habit. Burning crude oil to move us around was always a temporary solution anyway. We knew it would end when the oil ran out. As a bonus answer to those who say, 'but how will we produce all the electric needed to run all those cars,' there is a partial answer. Once the US completes the conversion to energy-efficient bulbs and ditches incandescent 100% nationwide, the energy savings will be enormous. Estimates vary, but US energy usage from incandescent bulbs alone are probably between 10%-20% of our total usage each year. We're also headed in the right direction: Since 2001 we've lowered our total electric usage about 7%. This is expected to increase to 30% or more within 15 years.