Need help removing light trails

[richardsim7]

So I took a photo back in January (so it can't really be reshot) and I'm having trouble removing the car(s) that appeared in the last couple of seconds on the right.

I've tried and it's not as simple as it seems (ie the road isn't just "black")

Any help would be appreciated

 

[colleague]

you can cover it with black and lower the opacity

 

[richardsim7]

Interesting! I'll give that a go!

Just create a new layer, yeah??

 

[colleague]

yes, but also make good selection and remade 1 line with stroke path
and on my monitor i see better the if work on the inverse

 

[richardsim7]

Hmm, for some reason my attempt has gone horribly wrong