Sort:  

Photo at night (long exposure) of cars or another light source ?

nope you still have 1 more guess and 1 vague hint, use them wisely

Then give me a hint :D

ok your super vague hint is. elements

You photographed water ?
I don´t know haha
interested to find out

Nope unfortunately, thats all your guesses better luck next time, you will have to stick around to find out