Vintage Bugatti - Car Pencil Drawing

This was the first time I drew a car and it was fun. And took forever.

I hadn't realised how very many details make up a car before started working on it and how long it would take to draw them. I nearly lost my patience with the tyres' spokes. I'd originally planned to draw a background (you can already see landscape reflections), but the car alone has eaten 20+ hours and I'm very ready to be done with it and go back to drawing a portrait.  

I'm curious what you think, though. Good car even without a background? Anything you miss? Anything that worked well or is in need of improvement? 

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Size A4, Bristol board
0.3 mechanical pencil, Ain Stein 2B lead 
0.5 mechanical pencil, Ain Stein 4B lead
3.15 mechanical pencil, Faber Castell 6B lead
Tombow Mono Zero precision eraser and kneaded eraser 
blended with several sizes paper blending stumps