Great work, nice pair of rare Lamborghinis and lovely E Type. I agree with $imon re the surface subdivision and seeing them in a studio environment. The detailing on the Jag is very good, I'd love to see a clay render. The Lambos appear to be simpler, something like what might be used in a game, is this the plan? I'd also work on the duco (paint work), it appears a bit flat. Car duco is a particularly difficult thing to get right - too shiny and it looks like plastic, too dull and it looks sand-blasted - there are some tutorials about that might help. The Espada at least doesn't appear to have a modelled interior, only inside shots rendered on the glass (or is that a too-high refractive index on the glass material warping the perspective?). I'd love to see the Espada in particular brought up to a high level of detail, such a beautiful and rare vehicle deserves it! Excellent work, I'd love to see more.