How to make the wheels randomly rotate like a supermarket cart?

Question

Unity

There is a trolley with a 4 wheel collider, you need to make sure that the wheels rotate depending on where the trolley goes.
At first, because of this, the trolley only drove forward and backward, but I removed the lateral friction and now the trolley drives as it should, but the wheels still do not rotate :(
HELP:)

Answer 1

https://unity3dschool.ru/kak-sdelat-mashinku-na-wh...