Atomic Battery

Look at the Tesla car and thinking the only thing holding it back is the battery power.

What if a car had a small radio active reactor. This replaces the battery weakness of holding a limited charge. 

The heating elements in the car need to be efficient, that is where aerodynamics and radiator checks in. 

Getting in a little bit more deep. If a personal vehicle of 300kgs had to move at day 40 KMPH. 

Precondition:  In even terrain the car consumes more than 3kW to maintain 40km/h.

In an ideal place, it take 4X times more force to move a body from constant. So that amount of power needed to a body of 300 kgs at 40 KMPL should be equal to moving 1200 kgs. Which will need a motor close to 1200W. 

Based on what I was able to find a small atomic battery will be the size if a penny and can last for 5,730 years to reach 50 per cent power, if it is a Carbon-14 one.

                 - Tathagat Banerjee

Few sources of information:

https://en.m.wikipedia.org/wiki/Atomic_battery

https://newatlas.com/smaller-nuclear-battery/13076/

https://batteryuniversity.com/learn/article/lithium_based_batteries

https://www.google.com/amp/s/phys.org/news/2016-11-diamond-age-power-nuclear-batteries.amp