If you donate 55 Euros you get an option to choose any house as long as it's in a realistic location and it's not owned by anyone, like this house below for example.
Spoiler
I've heard that having money in your bank gets you more money that you'll earn in an entire week from a business, but that's only if you're in-game for hours & the amount of money you have in your bank.
Businesses also got an advantage; it earns you money even if you're offline.
And of course, a disadvantage; it can be robbed.
//- So if you're planning to buy a business, donate the 60euros, put aside half of your money on your business, and buy cars/houses with the rest.
And as Mueller said;
Mueller wrote:
The vehicles can be of any kind except LEA vehicles ( For example enforcer / lspd cruiser ) and heavy non-realistic vehicles ( like a monster truck )