Here are all the resources that may be helpful with researching cars! I recommend looking at this AND also looking at a photo reference and applying this.

So, draw these, look at these, but also: look at a photo and seeing the box and draw the box too!

https://www.drawinghowtodraw.com/stepbystepdrawinglessons/2010/05/simple-lesson-in-perspective-drawing/

So in the first lesson, I chose a pretty simple car, much like this.

As long as we see the boxes correctly in space, then we just need to carve out the edges for the car. but some more modern cars are a bit more curvy and diagonal. The box is still there, and it's worth it to find it.

https://www.charcoals.net/step-by-step-drawing-a-simple-automobile/

https://www.deviantart.com/candy-coupe/art/How-to-draw-Bullet-85239024

Krenz Art

https://www.youtube.com/watch?v=5rP8-6hbsfw

https://twitter.com/EtheringtonBros/status/1131191268854382592/photo/1

Also, a for-fun add-on on Tires by https://twitter.com/EtheringtonBros/status/1131191268854382592/photo/1