Mitsubushi iMiev... all electric vehicle, will be on sale in Japan by the end of 2009. With plans to come to Australia next year.

Around the $30k mark, it has a range of around 160kms. It's slightly quicker than a petrol powered Mitsubushi Colt, but with the advantage of course it doesn't guzzle fuel.
Although one car that does impress me is the new Toyota Prius that'll be going to market. It's still a hybrid, but puts out a decent 100kw of power ... and drinks around 5.7L/100kms.

Then of course, if you like the EV sports cars...

Shelby plans on making the worlds fastest production EV sportscar. A single electric motor putting out 500hp of power, and they're looking at the possibility of bolting a second motor for 1000hp instant power.
Still... my only argument against buying new EV cars is, that the input required to produce them will far exceed the pollution it will put out in it's lifetime. If you're really keen on saving our environment, instead of junking that old tired car you've got... put it back into good use. I've seen lovely Datsun 240z's thrown on the scrap heap over a blown head gasket.. that's terrible waste. You could convert something like that to fuel injection and breath new life into it, whilst doing your bit for the environment.