If you are earning money and you want to get rich. You can invest on properties or other things that increases value. Never invest n products that depreciate fast like Vehicles etc.
No one considers vehicles as a form of investment. (i.e if you are collecting vintage vehicles, then it is a different case). And investment in property is not always risk-free. For example, some of the luxury apartments in the UAE, which were going for $1 million+ USD in 2008 are now priced at $350,000 to $400,000.