Duncan, you're darn right you can do it! There have never been more ways of making money, than in the times we live in now. And step by step is the way to go. Also finding a way of making money from the labor of others doesn't hurt. That sounds really bad, but it's all in how you go about it really, every successful business with more than one person doing the work does this. Or developing material assets that make you money while you sleep - like a night club.
Set small distinct goals, and build your empire one brick at a time. Keep your head, keep your integrity - treat your people well, and before you know it, you'll be making more money than you need.
About the Lamborghini, this will become one of the simplest things to aquire. Especially something like a Countach, maintaining one would could be more expensive than buying it.
Your dream is very attainable. For inspiration, check this out! -
http://www.dupontregistry.com
Question, what kind of business interests you?