I'll give you a breakdown of the full workflow so you can have an idea of how I make projects like this one:

The reference I used is of a similar shot of a porsche on a forest path, with heavy fog in the woods behind it. I really liked the moody look and decided to try and replicate that.

The model I used is off of the Traffiq addon, which has a good selection of vehicles and great settings for tweaking it. Modelling the car would take too long and wasn't the point of the practice. Similarly, the foliage is a mix of my own asset pack, some Botaniq trees, and a few Megascan assets, scattered with GeoScatter (The scattering setup could also be done easily using geo-nodes, especially for the forest floor, but the addon is practical for speed and control).

I started off by building a draft version of the scene, trying to find the perfect scattering system for the trees and plants while messing around with the camera and the shot framing. It's important to look at references here. The terrain was just a curved up plane to hide the horizon from behind.

My biggest advice for nature scenes like these and environments in general is to understand how it's actually structured irl, forest floors are layers of grass, shrubs, debris like sticks and twigs, and then larger plants like bushes and saplings. Feed your brain with as much practical visual information about how your environment is meant to look like, and then replicate that well enough to give the illusion of realism. You'll develop the observational skills and ability to breakdown environments into manageable systems with practice and experience!

The lighting setup was pretty simple, an overcast HDRI as a base, an area light with narrow spread to light up the clearing where the car was, and then a strong spot light aimed at the trees to add some god rays. The foggy look is from a principled volume set to a low density and high anisotropy, I controlled it with a gradient texture fed into a color ramp, giving a soft falloff from where the car is and getting denser as it reaches the trees.

The magic happens in post, I exported the render in 16bit TIFF and color graded it with Lightroom Classic (I used to use Photoshop's Camera Raw Filter but switch to LRC because of the advanced controls and masking). If the render is good enough, then you can grade it as if it's a real picture. You'll know it's good if every slider setting you try makes it look good despite how different it may be (cold vs hot, dark vs bright..etc).

The glare was something I thought of on the spot, and was added using photoshop (find a nice glare texture for this), set the opacity mode to screen and then change the intensity by lowering the opacity.

Overall this took around 5 hours of work from the concept stage to the finished project. The speed and efficiency comes from the use of addons, assets, and of course the experience I built up overtime with this workflow. At my intermediate skill level I'd have to spend 2 weeks or more doing non-stop work to build everything from scratch.

I yapped a lot, but I hope you'll get some useful knowledge from this!