Is "veo aquel coche" correct?
Or should it be "veo aquel uno coche"?
2 Answers
Here is a lesson: http://www.studyspanish.com/lessons/demonstratives.htm
Aquel means that or that one with a sense of being over there or way over there, or distant. It does not mean over there.
Veo aquel coche is a correct sentence that means I see that (distant, further away) car. What is in the parentheses is only a sense, not an equivalent.
Veo aquel uno coche is just wrong. First it would be un coche. Then Veo aquel un coche would mean I see that a car (and that is that in that one not that as in que). Makes no sense. You can say veo aquel coche, veo ese coche, veo este coche, veo el coche, or veo un coche, but you have to pick one of those only, you cant combine them (at least not in a manner I can think of right now).
To add to bosquederoble´s answer: In conversation a distant car emphasized would be el coche aquello.
In writting "that car" is used when we mention it well after it has already appeared in prior text aquel coche.