Nuclear Battery Powered Cars In The Near Future

This idea are from the file "back to the future" and we think to this from a long, long time but our researchers claim that they are going to make cars that run on nuclear batteries in the next couple of decades.
The scientists have developed might pave the way for nuclear-powered cars in the near future. The material takes nuclear decay and can convert it to electricity far more efficiently than ever before. Spacecraft have been using this type of “nuclear battery” for decades to propel them through space, but it’s never been effective enough for terrestrial use. More tests are needed, but the nano-tech based polymers could be adapted to be more energy efficient, enough so that they could drive a standard-sized American car.

Even if it is going to work at all, i am not too sure how this is going to work. These people are talking about nuclear batteries and we just create a Li-ion batteries. This will be the first biggest invention of entire world if they are produced.