One problem. Lamborghini, like most exotics, have used carbon-fiber bodies for quite some time now due to it's extreme strength-to-weight ratio. CFRP body panels laugh at hailstones...
For me rich is defined as; When the majority of your time (ie Time is money) is spent having to manage your money instead of having to work for more money. At that point the opportunity cost of working for more money is not worth the time that could be spent on either managing the existing money or spending that limited time on other investments such as enjoying life.
Rich would mean having a fulfilled family life, being able to provide for your children and your wife, your parents, not having to worry about medical bills or other expenses and having inner peace knowing that you have accomplished great things in life and impacted others in a positive way. And a few lambos/jets/mansions wouldn't hurt either :-D
In other words, you say "being rich" has nothing to do with wealth and has everything to do with marrying an undemanding person and having high self-esteem.