It's an interesting concept, but there's some lines in it that don't quite flow to continue it's elegance. Vehicles have faces, and you should keep this in mind when designing. The Line up around the front of the light coming around to the body of the car is really harsh and rigid and would have been better working into the body work. The back of the car is also looking a bit off around the rear wheel arch, it would benefit from a beefier shape around the arch of the wheel.
I also suggest watching your topology, and push yourself for smoother creation in your arcs for consistency of the model. Constantly test render, look at the car from multiple angles and importantly keep your panel gaps tight and close, don't let the geometry smooth down into them like the front of the bonnet here. Panel gaps should be a slick line down the car which doesn't impose on the flow of the shape.
My suggestion is find a high quality model of a vehicle, and look at the topology on it. Learn how we create vehicle flow and detailing and how we continue a smooth surface while having panel gaps, doors, structures etc. Then after studying the poly flow, create another vehicle, but do one that actually exists. One that will challenge your modelling talent, not your concepting talent. They're two very different skillsets, so before you start concepting more, do something which allows you to fully focus on harnessing your clean modelling ability. That means when it comes to creating a concept vehicle, it'll look slicker and much more professional.
And with every new creation, make it your intention to make a jump in quality and attention to detail. Ignore the surfacing, materials etc at this point. Get the topology spot on.
A little nitpick though, it's a bit too dark in some areas depending on how you look at this. I mean, I can see some indication of the grill on my computer monitor but when I look at this image on my phone it's completely gone like it gets absorbed in the background.
Yeah, I lowered the gamma a bit because I thought it looked better with sharper shadows.
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