Allright, that was srsly cool!
We are doing family trips across Lithuania on weekends. This weekend we have visited a "gravity hill".

So basically here's what you do:
- drive your car down the slope, to the bottom
- stop the car. Leave at neutral
- the car itself starts moving.. UP TO THE HILL!!

I was sceptic, but ffs, it took my car less than 2 minutes to reach 25km/h from a point zero!!

I even tried once more with my engine turned off. The same thing happened :)